分享一个唯美的日月交替的小动画，仅需22步，就可以使用css+js绘制超好看的动画！祝大家早安晚安，每日安好鸭，保姆级步骤教程。
前言
今天分享一个唯美的日月交替的小动画，祝大家早安晚安，每日安好鸭！
仅需22步，带领大家，使用css+js绘制超好看的动画！大家可以跟着步骤一步一步编写，也可以直接复制完整代码至编译器，看效果！
ps:现在先贴代码啦，明天醒了更新具体的步骤，带领大家一步一步制作,感谢支持！
2022.5.13
今天更新具体步骤啦！
仅需22步，带领大家，使用css+js绘制超好看的动画！大家可以跟着步骤一步一步编写，也可以直接复制完整代码至编译器，看效果！
一、HTML(index.html)
1. 加入元素
分别加入我们需要的元素，天空，云彩，飞鸟，山川，太阳等，具体看代码中的注释
<!DOCTYPE html><html lang="en" ><head><meta charset="UTF-8"><title>早安、晚安动画</title><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/meyer-reset/2.0/reset.min.css"><link rel="stylesheet" href="./style.css"></head><body><div class="container-wrapper"><h1>Good morning, and in case I don't see ya, good afternoon, good evening, and good night!</h1><p id="subtitle">点点小太阳鸭</p><div class="container"><div class="circle-container"><!-- 天空部分 --><div class="sky"><div class="sky-night"><div class="stars"><div class="shooting-star"></div><div class="star-group-1"></div><div class="star-group-2"></div><div class="star-group-3"></div><div class="star-group-4"></div></div></div><!-- 云彩 --><div class="cloud cloud-1"></div><div class="cloud cloud-2"></div><div class="cloud cloud-3"></div><div class="cloud cloud-4"></div><div class="cloud cloud-5"></div><div class="cloud cloud-6"></div><div class="bird bird-1"></div><div class="bird bird-2"></div><div class="bird bird-3"></div></div><!-- 山川 --><div class="mountains"><div class="mountain-back"><div class="mountain-back-1"></div><div class="mountain-back-2"></div></div><div class="mountain-middle"><div class="mountain-middle-1"></div><div class="mountain-middle-2"></div></div><div class="mountain-top"><div class="mountain-top-1"></div></div></div><!-- 太阳 --><div class="sun-container"><div class="sun"></div></div><!-- 海洋 --><div class="ocean"><div class="boat"></div><div class="ocean-night"><div class="moon"></div><!-- 山川 --><div class="mountains mountains-bottom"><div class="mountain-back"><div class="mountain-back-1"></div><div class="mountain-back-2"></div></div><div class="mountain-middle"><div class="mountain-middle-1"></div><div class="mountain-middle-2"></div></div><div class="mountain-top"><div class="mountain-top-1"></div></div></div></div></div></div></div></div><!-- partial --><script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js'></script><script src="https://cdnjs.cloudflare.com/ajax/libs/prefixfree/1.0.7/prefixfree.min.js"></script><script src="./index.js"></script></body></html>
运行效果：
二、CSS(style.css)
2. 重置浏览器样式
导入reset.min.css（已完成），重置浏览器标签的样式表,重新定义标签样式,覆盖浏览器的CSS默认属性,把浏览器提供的默认样式覆盖掉
@import url("https://fonts.googleapis.com/css?family=Sanchez");* {padding: 0;margin: 0;-webkit-box-sizing: border-box;box-sizing: border-box;}*:before,
*:after {content: "";position: absolute;}
运行效果：
3.设置字体样式
html {font-family: "Sanchez", serif;}
运行效果：
4.将我们的元素居中
.container-wrapper {width: 100%;height: 100%;display: -webkit-box;display: -ms-flexbox;display: flex;-webkit-box-pack: center;-ms-flex-pack: center;justify-content: center;-webkit-box-align: center;-ms-flex-align: center;align-items: center;-webkit-box-orient: vertical;-webkit-box-direction: normal;-ms-flex-direction: column;flex-direction: column;}
运行效果：
5.设置背景颜色
html {-webkit-transition: background-color 3s ease;-o-transition: background-color 3s ease;transition: background-color 3s ease;-webkit-transition-delay: 2s;-o-transition-delay: 2s;transition-delay: 2s;background-color: #fff7f4;}
运行效果：
6.设置动画显示的位置
子绝父相，这是父元素，设置为相对定位
.container {width: 450px;height: 450px;position: relative;}
7.设置夜晚时的背景色
我们将会在js中使用它
.container-night {background-color: #e4ecff;}
8.将动画显示的区域设置为圆型
根据最终效果，我们将动画显示的区域设置为原型
.circle-container {width: 450px;height: 450px;-webkit-clip-path: circle(50% at 50% 50%);clip-path: circle(50% at 50% 50%);position: absolute;overflow: hidden;z-index: 100;}
9.绘制白天时天空的样子
.sky {position: absolute;width: 100%;height: 55%;top: 0;background: -webkit-gradient(linear,
left top,
left bottom,from(#feb8b0),to(#fef9db));background: -webkit-linear-gradient(#feb8b0, #fef9db);background: -o-linear-gradient(#feb8b0, #fef9db);background: linear-gradient(#feb8b0, #fef9db);z-index: 1;overflow: hidden;}
运行效果：
10.绘制夜晚时天空的样子
绘制夜晚时天空的样子，我们使用opacity属性，将其设置为不可见，在js中使用toggleClass方法将该属性切换为1，使其可见，后头很多动画都是这么实现的。运行效果的图中将该属性设置为了1，方便大家先看到效果
.sky-night {position: absolute;width: 100%;height: 100%;background: -webkit-gradient(linear,
left top,
left bottom,from(#4c3f6d),color-stop(#6c62bb),to(#93b1ed));background: -webkit-linear-gradient(#4c3f6d, #6c62bb, #93b1ed);background: -o-linear-gradient(#4c3f6d, #6c62bb, #93b1ed);background: linear-gradient(#4c3f6d, #6c62bb, #93b1ed);opacity: 0;-webkit-transition: opacity 3s;-o-transition: opacity 3s;transition: opacity 3s;-webkit-transition-delay: 2s;-o-transition-delay: 2s;transition-delay: 2s;}/*用于切换opacity属性*/.sky-night-fade {opacity: 1;}
运行效果：
11.创建昼夜交替动画
@-webkit-keyframes sky-night {0% {background: -webkit-gradient(linear,
left top,
left bottom,from(#feb8b0),to(#fef9db));background: -webkit-linear-gradient(#feb8b0, #fef9db);background: linear-gradient(#feb8b0, #fef9db);}100% {background: -webkit-gradient(linear,
left top,
left bottom,from(#4c3f6d),to(#96b5ee));background: -webkit-linear-gradient(#4c3f6d, #96b5ee);background: linear-gradient(#4c3f6d, #96b5ee);}}@keyframes sky-night {0% {background: -webkit-gradient(linear,
left top,
left bottom,from(#feb8b0),to(#fef9db));background: -webkit-linear-gradient(#feb8b0, #fef9db);background: -o-linear-gradient(#feb8b0, #fef9db);background: linear-gradient(#feb8b0, #fef9db);}100% {background: -webkit-gradient(linear,
left top,
left bottom,from(#4c3f6d),to(#96b5ee));background: -webkit-linear-gradient(#4c3f6d, #96b5ee);background: -o-linear-gradient(#4c3f6d, #96b5ee);background: linear-gradient(#4c3f6d, #96b5ee);}}
12.绘制太阳
设置太阳的位置，并绘制太阳
.sun-container {z-index: 10;position: absolute;left: 0;right: 0;margin: auto;top: 0;bottom: 0;width: 290px;height: 290px;/* background-color: rgba(255, 0, 255, 0.2);*/-webkit-transform-origin: center center;-ms-transform-origin: center center;transform-origin: center center;-webkit-transition: all 5s ease-in-out;-o-transition: all 5s ease-in-out;transition: all 5s ease-in-out;}.sun {position: absolute;width: 90px;height: 90px;border-radius: 50%;background: -webkit-gradient(linear,
left top,
left bottom,from(#fefefe),to(#fffbe8));background: -webkit-linear-gradient(#fefefe, #fffbe8);background: -o-linear-gradient(#fefefe, #fffbe8);background: linear-gradient(#fefefe, #fffbe8);cursor: pointer;z-index: 10;}
13.绘制海洋
13.1 海洋底层颜色
绘制海洋部分，及其动画效果，同样使用toggleClass设置动画停止后，海洋的样式
.ocean {position: absolute;width: 100%;height: 45%;bottom: 0;background: #ceefe8;z-index: 200;-webkit-animation: ocean-top 3s infinite;animation: ocean-top 3s infinite;opacity: 1;-webkit-transition: all 3s ease;-o-transition: all 3s ease;transition: all 3s ease;-webkit-transition-delay: 2s;-o-transition-delay: 2s;transition-delay: 2s;-webkit-transform-origin: top;-ms-transform-origin: top;transform-origin: top;}.animation-stop {-webkit-animation: ocean-top 3s forwards;animation: ocean-top 3s forwards;height: 42%;}
运行效果：
13.2 绘制夜晚时的海洋
与夜晚时的天空同理
.ocean-night {position: relative;width: 100%;height: 100%;background: -webkit-gradient(linear,
left top,
left bottom,from(#8da6e6),to(#788cc9));background: -webkit-linear-gradient(#8da6e6, #788cc9);background: -o-linear-gradient(#8da6e6, #788cc9);background: linear-gradient(#8da6e6, #788cc9);opacity: 0;-webkit-transition: opacity 3s;-o-transition: opacity 3s;transition: opacity 3s;-webkit-transition-delay: 2s;-o-transition-delay: 2s;transition-delay: 2s;z-index: 500;}.ocean-night-fade {opacity: 1;}
运行效果（opacity设置为1后显示效果）：
13.3丰富海洋层次感并设置浮动动画
将海洋分为三层，显得更有层次感，并绘制海洋的动画效果，使海洋浮动起来
.ocean:before,
.ocean:after {width: 100%;bottom: 0;position: absolute;z-index: 200;}.ocean:before {height: 75%;background: #baeced;-webkit-animation: ocean-middle 3s infinite;animation: ocean-middle 3s infinite;}.ocean:after {height: 50%;background: #ace6f1;-webkit-animation: ocean-bottom 2s infinite;animation: ocean-bottom 2s infinite;}@-webkit-keyframes ocean-top {0% {-webkit-transform: rotate(0deg);transform: rotate(0deg);}25% {-webkit-transform: rotate(-1deg);transform: rotate(-1deg);}50% {-webkit-transform: rotate(0deg);transform: rotate(0deg);}75% {-webkit-transform: rotate(1deg);transform: rotate(1deg);}100% {-webkit-transform: rotate(0deg);transform: rotate(0deg);}}@keyframes ocean-top {0% {-webkit-transform: rotate(0deg);transform: rotate(0deg);}25% {-webkit-transform: rotate(-1deg);transform: rotate(-1deg);}50% {-webkit-transform: rotate(0deg);transform: rotate(0deg);}75% {-webkit-transform: rotate(1deg);transform: rotate(1deg);}100% {-webkit-transform: rotate(0deg);transform: rotate(0deg);}}@-webkit-keyframes ocean-middle {0% {height: 75%;}50% {height: 77%;-webkit-transform: rotate(2deg);transform: rotate(2deg);}100% {height: 75%;}}@keyframes ocean-middle {0% {height: 75%;}50% {height: 77%;-webkit-transform: rotate(2deg);transform: rotate(2deg);}100% {height: 75%;}}@-webkit-keyframes ocean-bottom {0% {height: 50%;}50% {height: 52%;-webkit-transform: rotate(-2deg);transform: rotate(-2deg);}100% {height: 50%;}}@keyframes ocean-bottom {0% {height: 50%;}50% {height: 52%;-webkit-transform: rotate(-2deg);transform: rotate(-2deg);}100% {height: 50%;}}
运行效果：
14. 绘制小船
14.1 绘制船身
绘制船身，及切换夜晚时小船移出显示范围，同样是使用toggleClass
.boat {position: absolute;width: 50px;height: 0px;border-top: 7px solid #bb7074;border-left: 10px solid transparent;border-right: 10px solid transparent;left: 280px;/* right: -50px;*/top: -5px;-webkit-transform-origin: center bottom;-ms-transform-origin: center bottom;transform-origin: center bottom;-webkit-animation: boat 5s infinite;animation: boat 5s infinite;-webkit-animation-delay: 0.25s;animation-delay: 0.25s;-webkit-transition: all 4s ease-in-out;-o-transition: all 4s ease-in-out;transition: all 4s ease-in-out;}.boat-sail {margin-left: -350px;}
运行效果：
14.2 绘制船帆
.boat,
.boat:before,
.boat:after {position: absolute;z-index: 200;}.boat:before,
.boat:after {width: 0;height: 0;border: 0 solid transparent;}.boat:before {bottom: 8px;right: -6px;border-right-width: 15px;border-left-width: 0px;border-bottom: 30px solid #bb7074;}.boat:after {bottom: 8px;right: 11px;border-right-width: 0px;border-left-width: 20px;border-bottom: 48px solid #bb7074;}
运行效果：
14.3 设置小船动画
设置小船在海洋上浮动的动画
@-webkit-keyframes boat {0% {-webkit-transform: rotate(1deg)translate(2px, 0px);transform: rotate(1deg)translate(2px, 0px);}25% {-webkit-transform: rotate(-1deg) translate(-2px, -2px);transform: rotate(-1deg) translate(-2px, -2px);}50% {-webkit-transform: rotate(1deg) translate(1px, 0px);transform: rotate(1deg) translate(1px, 0px);}75% {-webkit-transform: rotate(-1deg) translate(-1px, -2px);transform: rotate(-1deg) translate(-1px, -2px);}100% {-webkit-transform: rotate(1deg) translate(2px, 0px);transform: rotate(1deg) translate(2px, 0px);}}@keyframes boat {0% {-webkit-transform: rotate(1deg)translate(2px, 0px);transform: rotate(1deg)translate(2px, 0px);}25% {-webkit-transform: rotate(-1deg) translate(-2px, -2px);transform: rotate(-1deg) translate(-2px, -2px);}50% {-webkit-transform: rotate(1deg) translate(1px, 0px);transform: rotate(1deg) translate(1px, 0px);}75% {-webkit-transform: rotate(-1deg) translate(-1px, -2px);transform: rotate(-1deg) translate(-1px, -2px);}100% {-webkit-transform: rotate(1deg) translate(2px, 0px);transform: rotate(1deg) translate(2px, 0px);}}
15. 绘制月亮
与太阳差不多
.moon {position: absolute;width: 90px;height: 90px;border-radius: 50%;background: -webkit-gradient(linear,
left top,
left bottom,from(#fefefe),to(#fffbe8));background: -webkit-linear-gradient(#fefefe, #fffbe8);background: -o-linear-gradient(#fefefe, #fffbe8);background: linear-gradient(#fefefe, #fffbe8);opacity: 0;left: 80px;margin-top: 90px;-webkit-transition: opacity 1s ease;-o-transition: opacity 1s ease;transition: opacity 1s ease;}.moon-fade {opacity: 0.3;-webkit-transition-delay: 4s;-o-transition-delay: 4s;transition-delay: 4s;}
16. 绘制飞鸟
16.1 设置三只鸟儿的位置及样式
.bird:before,
.bird:after {border: 2px solid #bb7074;border-bottom: 0;width: 18px;height: 8px;z-index: 200;}.bird {position: absolute;-webkit-animation: bird 1s infinite;animation: bird 1s infinite;z-index: 200;-webkit-transition: all 2s ease-in-out;-o-transition: all 2s ease-in-out;transition: all 2s ease-in-out;}.birds-fly {margin-left: 150px;margin-top: -100px;}.bird:after {border-top-left-radius: 18px;border-top-right-radius: 18px;border-right: 0;-webkit-animation: wing-right 1s infinite;animation: wing-right 1s infinite;-webkit-transform-origin: bottom left;-ms-transform-origin: bottom left;transform-origin: bottom left;}.bird:before {left: -19px;border-top-right-radius: 18px;border-top-left-radius: 18px;border-left: 0;-webkit-animation: wing-left 1s infinite;animation: wing-left 1s infinite;-webkit-transform-origin: bottom right;-ms-transform-origin: bottom right;transform-origin: bottom right;}.bird-1 {left: 240px;top: 140px;-webkit-transform: scale(0.9)rotate(10deg);-ms-transform: scale(0.9)rotate(10deg);transform: scale(0.9)rotate(10deg);-webkit-animation-delay: 0.4s;animation-delay: 0.4s;}.bird-2 {left: 280px;top: 120px;-webkit-transform: scale(0.8)rotate(-5deg);-ms-transform: scale(0.8)rotate(-5deg);transform: scale(0.8)rotate(-5deg);-webkit-animation-delay: 0.2s;animation-delay: 0.2s;}.bird-3 {left: 250px;top: 100px;-webkit-transform: scale(1)rotate(8deg);-ms-transform: scale(1)rotate(8deg);transform: scale(1)rotate(8deg);}
运行效果：
16.2 设置鸟儿飞行的动画
从小变大，展现从远处飞来的动画，以及翅膀的挥动（wing-left/wing-right），在步骤16.1中调用该动画
@-webkit-keyframes bird {
0% { -webkit-transform: translate(0px, 0px); transform: translate(0px, 0px);
}
50% { -webkit-transform: translate(2px, -3px); transform: translate(2px, -3px);
}
100% { -webkit-transform: translate(0px, 0px); transform: translate(0px, 0px);
}}@keyframes bird {
0% { -webkit-transform: translate(0px, 0px); transform: translate(0px, 0px);
}
50% { -webkit-transform: translate(2px, -3px); transform: translate(2px, -3px);
}
100% { -webkit-transform: translate(0px, 0px); transform: translate(0px, 0px);
}}@-webkit-keyframes wing-right {
0% { -webkit-transform: rotate(0deg); transform: rotate(0deg);
}
50% { -webkit-transform: rotate(10deg); transform: rotate(10deg);
}
100% { -webkit-transform: rotate(0deg); transform: rotate(0deg);
}}@keyframes wing-right {
0% { -webkit-transform: rotate(0deg); transform: rotate(0deg);
}
50% { -webkit-transform: rotate(10deg); transform: rotate(10deg);
}
100% { -webkit-transform: rotate(0deg); transform: rotate(0deg);
}}@-webkit-keyframes wing-left {
0% { -webkit-transform: rotate(0deg); transform: rotate(0deg);
}
50% { -webkit-transform: rotate(-10deg); transform: rotate(-10deg);
}
100% { -webkit-transform: rotate(0deg); transform: rotate(0deg);
}}@keyframes wing-left {
0% { -webkit-transform: rotate(0deg); transform: rotate(0deg);
}
50% { -webkit-transform: rotate(-10deg); transform: rotate(-10deg);
}
100% { -webkit-transform: rotate(0deg); transform: rotate(0deg);
}}
运行效果：
17. 绘制山峰
首先设置山峰图层的位置，定位山峰的位置，然后绘制三个图层的山峰，黄色，粉色，红色依次对应top，middle，back三层山峰
.mountains {position: absolute;width: 100%;/* background-color: #ccc;*/height: 20%;bottom: 35%;/* overflow: hidden;*/}.mountains-bottom {opacity: 0.5;-webkit-transform-origin: center;-ms-transform-origin: center;transform-origin: center;-webkit-transform: scaleY(-1);-ms-transform: scaleY(-1);transform: scaleY(-1);top: 0;position: fixed;overflow: hidden;height: 31.5%;}.mountains div,
.mountains div:after,
.mountains div:before {border-radius: 50%;position: absolute;z-index: 200;}.mountains * {-webkit-transition: background 3s ease;-o-transition: background 3s ease;transition: background 3s ease;-webkit-transition-delay: 2s;-o-transition-delay: 2s;transition-delay: 2s;}.mountain-top,
.mountain-top * {background: #fffcdd;}.mountain-top {width: 200px;height: 90px;top: 18px;right: 0;margin-right: -50px;}.mountain-top-1 {position: absolute;width: 250px;height: 80px;top: 15px;right: 0;margin-right: 150px;}/*夜晚的山*/.mountain-top-night {background: #614da2;}.mountain-middle,
.mountain-middle * {background: #fee1cb;}.mountain-middle {width: 180px;height: 120px;top: 12px;margin-left: 180px;}.mountain-middle-1 {width: 200px;height: 100px;top: 3px;margin-left: -110px;}.mountain-middle-2 {width: 220px;height: 150px;margin-left: -250px;}.mountain-middle-night {background: #6154a4;}.mountain-back,
.mountain-back * {background: #fec6b9;}.mountain-back {width: 180px;height: 120px;top: 0px;}.mountain-back-1 {width: 200px;height: 100px;top: 3px;margin-left: 80px;}.mountain-back-2 {width: 150px;height: 80px;margin-left: 250px;}.mountain-back-night {background: #7980c8;}
运行效果：
18. 绘制云朵
18.1 设置云朵图层的位置，定位云朵位置
.cloud,
.cloud:after,
.cloud:before {background: #fff;position: absolute;z-index: 500;}.cloud-1 {left: 310px;top: 50px;}.cloud-2 {left: 280px;top: 150px;-webkit-animation-delay: 0.2s;animation-delay: 0.2s;}.cloud-3 {left: 410px;top: 190px;-webkit-animation-delay: 0.4s;animation-delay: 0.4s;}.cloud-4 {left: 160px;top: 120px;-webkit-animation-delay: 0.6s;animation-delay: 0.6s;}.cloud-5 {left: 60px;top: 170px;-webkit-animation-delay: 0.8s;animation-delay: 0.8s;}.cloud-6 {left: 0px;top: 100px;-webkit-animation-delay: 1s;animation-delay: 1s;}
18.2 绘制云朵
18.2.1
.cloud {width: 65px;height: 12px;border-radius: 20px;-webkit-animation: cloud 4s infinite;animation: cloud 4s infinite;}
运行效果：
18.2.2
.cloud:after {border-radius: 50%;height: 30px;left: 27px;top: -18px;width: 30px;}
运行效果：
18.2.3
.cloud:before {border-radius: 50%;height: 20px;left: 12px;top: -11px;width: 20px;}
运行效果：
18.3 添加云朵的浮动动画
@-webkit-keyframes cloud {0% {-webkit-transform: translate(0px, 0px);transform: translate(0px, 0px);}25% {-webkit-transform: translate(2px, 2px);transform: translate(2px, 2px);}50% {-webkit-transform: translate(0px, 0px);transform: translate(0px, 0px);}75% {-webkit-transform: translate(-1px, -1px);transform: translate(-1px, -1px);}100% {-webkit-transform: translate(0px, 0px);transform: translate(0px, 0px);}}@keyframes cloud {0% {-webkit-transform: translate(0px, 0px);transform: translate(0px, 0px);}25% {-webkit-transform: translate(2px, 2px);transform: translate(2px, 2px);}50% {-webkit-transform: translate(0px, 0px);transform: translate(0px, 0px);}75% {-webkit-transform: translate(-1px, -1px);transform: translate(-1px, -1px);}100% {-webkit-transform: translate(0px, 0px);transform: translate(0px, 0px);}}
运行效果：
19. 绘制星星
加入小星星，并添加闪烁动画，步骤还是和之前一样
.stars *,
.stars *:before,
.stars *:after {border-radius: 50%;background-color: #fff;position: absolute;}.stars {opacity: 0;-webkit-transition: opacity 2s ease;-o-transition: opacity 2s ease;transition: opacity 2s ease;}.stars-fade {opacity: 1;-webkit-transition-delay: 4s;-o-transition-delay: 4s;transition-delay: 4s;}.star-group-1 {width: 5px;height: 5px;left: 225px;top: 120px;animation: twinkle 2s infinite linear;}.star-group-1:before {width: 4px;height: 4px;left: 50px;top: 18px;opacity: 0.8;}.star-group-1:after {width: 3px;height: 3px;left: -35px;top: 35px;opacity: 1;}.star-group-2 {width: 5px;height: 5px;left: 25px;top: 175px;animation: twinkle 1s infinite linear;}.star-group-2:before {width: 4px;height: 4px;left: 40px;top: 14px;opacity: 0.8;}.star-group-2:after {width: 3px;height: 3px;left: 30px;top: -40px;opacity: 1;}.star-group-3 {width: 5px;height: 5px;left: 125px;top: 50px;animation: twinkle 0.8s infinite linear;}.star-group-3:before {width: 4px;height: 4px;left: 50px;top: 20px;opacity: 0.8;}.star-group-3:after {width: 3px;height: 3px;left: 90px;top: -20px;opacity: 1;}.star-group-4 {width: 5px;height: 5px;left: 300px;top: 100px;animation: twinkle 1.2s infinite linear;}.star-group-4:before {width: 3px;height: 3px;left: 80px;top: 60px;opacity: 0.8;}.star-group-4:after {width: 3px;height: 3px;left: 50px;top: -20px;opacity: 1;}
运行效果（将夜晚的opacity设置为1时）：
20. 绘制流星及动画
@-webkit-keyframes twinkle {0% {opacity: 1;}25% {opacity: 0.3;}50% {opacity: 0.8;}75% {opacity: 0.5;}100% {opacity: 0.8;}}@keyframes twinkle {0% {opacity: 1;}25% {opacity: 0.3;}50% {opacity: 0.8;}75% {opacity: 0.5;}100% {opacity: 0.8;}}.shooting-star {position: absolute;background: -webkit-gradient(linear,
left top,
right top,from(rgba(255, 255, 255, 1)),to(rgba(255, 255, 255, 0)));background: -webkit-linear-gradient(left,rgba(255, 255, 255, 1) 0%,rgba(255, 255, 255, 0) 100%);background: -o-linear-gradient(left,rgba(255, 255, 255, 1) 0%,rgba(255, 255, 255, 0) 100%);background: linear-gradient(to right,rgba(255, 255, 255, 1) 0%,rgba(255, 255, 255, 0) 100%);width: 35px;height: 3px;left: 310px;top: 10px;-webkit-transform-origin: left;-ms-transform-origin: left;transform-origin: left;-webkit-transform: rotate(-40deg);-ms-transform: rotate(-40deg);transform: rotate(-40deg);}.shooting {-webkit-animation: shooting-star 2s 2 ease-in-out;animation: shooting-star 2s 2 ease-in-out;-webkit-animation-delay: 5s;animation-delay: 5s;}@-webkit-keyframes shooting-star {100% {-webkit-transform: rotate(-40deg)translateX(-450px);transform: rotate(-40deg)translateX(-450px);}}@keyframes shooting-star {100% {-webkit-transform: rotate(-40deg)translateX(-450px);transform: rotate(-40deg)translateX(-450px);}}
21.设置字体的位置及样式
p a:link,
p a:active,
p a:visited {color: inherit;text-decoration: none;border-bottom: 1px dotted;border-bottom-color: inherit;opacity: 0.6;}h1,
p {color: #bb7074;-webkit-transition: color 3s;-o-transition: color 3s;transition: color 3s;-webkit-transition-delay: 2s;-o-transition-delay: 2s;transition-delay: 2s;text-align: center;}h1 {margin: 60px 0 10px 0;font-size: 30px;position: relative;}p {font-size: 16px;line-height: 16px;margin: 40px;position: relative;opacity:0.6;}p#subtitle {margin-top: 10px;}.text-color {color: #7980c8;
运行效果：
完整CSS代码
/*2.导入reset.min.css，重置浏览器标签的样式表,重新定义标签样式,覆盖浏览器的CSS默认属性,把浏览器提供的默认样式覆盖掉*/@import url("https://fonts.googleapis.com/css?family=Sanchez");* {padding: 0;margin: 0;-webkit-box-sizing: border-box;box-sizing: border-box;}*:before,
*:after {content: "";position: absolute;}/*3.设置字体样式*/html {font-family: "Sanchez", serif;}/*4.将我们的元素居中*/.container-wrapper {width: 100%;height: 100%;display: -webkit-box;display: -ms-flexbox;display: flex;-webkit-box-pack: center;-ms-flex-pack: center;justify-content: center;-webkit-box-align: center;-ms-flex-align: center;align-items: center;-webkit-box-orient: vertical;-webkit-box-direction: normal;-ms-flex-direction: column;flex-direction: column;}/*5.设置背景颜色*/html {-webkit-transition: background-color 3s ease;-o-transition: background-color 3s ease;transition: background-color 3s ease;-webkit-transition-delay: 2s;-o-transition-delay: 2s;transition-delay: 2s;background-color: #fff7f4;}/*6.设置动画显示的位置，子绝父相，这是父元素，设置为相对定位*/.container {width: 450px;height: 450px;position: relative;}/*7.设置夜晚时的背景色，我们将会在js中使用它*/.container-night {background-color: #e4ecff;}/*8.根据最终效果，我们将动画显示的区域设置为原型*/.circle-container {width: 450px;height: 450px;-webkit-clip-path: circle(50% at 50% 50%);clip-path: circle(50% at 50% 50%);position: absolute;overflow: hidden;z-index: 100;}/*9.绘制白天时天空的样子*/.sky {position: absolute;width: 100%;height: 55%;top: 0;background: -webkit-gradient(linear,
left top,
left bottom,from(#feb8b0),to(#fef9db));background: -webkit-linear-gradient(#feb8b0, #fef9db);background: -o-linear-gradient(#feb8b0, #fef9db);background: linear-gradient(#feb8b0, #fef9db);z-index: 1;overflow: hidden;}/*10.绘制夜晚时天空的样子，我们使用opacity属性，将其设置为不可见，在js中使用toggleClass方法将该属性切换为1，使其可见。运行效果的图中将该属性设置为了1，方便大家先看到效果*/.sky-night {position: absolute;width: 100%;height: 100%;background: -webkit-gradient(linear,
left top,
left bottom,from(#4c3f6d),color-stop(#6c62bb),to(#93b1ed));background: -webkit-linear-gradient(#4c3f6d, #6c62bb, #93b1ed);background: -o-linear-gradient(#4c3f6d, #6c62bb, #93b1ed);background: linear-gradient(#4c3f6d, #6c62bb, #93b1ed);opacity: 0;-webkit-transition: opacity 3s;-o-transition: opacity 3s;transition: opacity 3s;-webkit-transition-delay: 2s;-o-transition-delay: 2s;transition-delay: 2s;}/*用于切换opacity属性*/.sky-night-fade {opacity: 1;}/*11.@-webkit-keyframes 创建动画，设置昼夜交替时天空的变换过程0%为开头动画，100%为动画完成*/@-webkit-keyframes sky-night {0% {background: -webkit-gradient(linear,
left top,
left bottom,from(#feb8b0),to(#fef9db));background: -webkit-linear-gradient(#feb8b0, #fef9db);background: linear-gradient(#feb8b0, #fef9db);}100% {background: -webkit-gradient(linear,
left top,
left bottom,from(#4c3f6d),to(#96b5ee));background: -webkit-linear-gradient(#4c3f6d, #96b5ee);background: linear-gradient(#4c3f6d, #96b5ee);}}@keyframes sky-night {0% {background: -webkit-gradient(linear,
left top,
left bottom,from(#feb8b0),to(#fef9db));background: -webkit-linear-gradient(#feb8b0, #fef9db);background: -o-linear-gradient(#feb8b0, #fef9db);background: linear-gradient(#feb8b0, #fef9db);}100% {background: -webkit-gradient(linear,
left top,
left bottom,from(#4c3f6d),to(#96b5ee));background: -webkit-linear-gradient(#4c3f6d, #96b5ee);background: -o-linear-gradient(#4c3f6d, #96b5ee);background: linear-gradient(#4c3f6d, #96b5ee);}}/*12.设置太阳的位置，并绘制太阳*/.sun-container {z-index: 10;position: absolute;left: 0;right: 0;margin: auto;top: 0;bottom: 0;width: 290px;height: 290px;/* background-color: rgba(255, 0, 255, 0.2);*/-webkit-transform-origin: center center;-ms-transform-origin: center center;transform-origin: center center;-webkit-transition: all 5s ease-in-out;-o-transition: all 5s ease-in-out;transition: all 5s ease-in-out;}.sun {position: absolute;width: 90px;height: 90px;border-radius: 50%;background: -webkit-gradient(linear,
left top,
left bottom,from(#fefefe),to(#fffbe8));background: -webkit-linear-gradient(#fefefe, #fffbe8);background: -o-linear-gradient(#fefefe, #fffbe8);background: linear-gradient(#fefefe, #fffbe8);cursor: pointer;z-index: 10;}/*13.绘制海洋部分，及其动画效果，同样使用toggleClass设置动画停止后，海洋的样式*/.ocean {position: absolute;width: 100%;height: 45%;bottom: 0;background: #ceefe8;z-index: 200;-webkit-animation: ocean-top 3s infinite;animation: ocean-top 3s infinite;opacity: 1;-webkit-transition: all 3s ease;-o-transition: all 3s ease;transition: all 3s ease;-webkit-transition-delay: 2s;-o-transition-delay: 2s;transition-delay: 2s;-webkit-transform-origin: top;-ms-transform-origin: top;transform-origin: top;}.animation-stop {-webkit-animation: ocean-top 3s forwards;animation: ocean-top 3s forwards;height: 42%;}/*14.绘制夜晚时的海洋，与夜晚时的天空同理*/.ocean-night {position: relative;width: 100%;height: 100%;background: -webkit-gradient(linear,
left top,
left bottom,from(#8da6e6),to(#788cc9));background: -webkit-linear-gradient(#8da6e6, #788cc9);background: -o-linear-gradient(#8da6e6, #788cc9);background: linear-gradient(#8da6e6, #788cc9);opacity: 0;-webkit-transition: opacity 3s;-o-transition: opacity 3s;transition: opacity 3s;-webkit-transition-delay: 2s;-o-transition-delay: 2s;transition-delay: 2s;z-index: 500;}.ocean-night-fade {opacity: 1;}/*15.将海洋分为三层，显得更有层次感，并绘制海洋的动画效果，使海洋浮动起来*/.ocean:before,
.ocean:after {width: 100%;bottom: 0;position: absolute;z-index: 200;}.ocean:before {height: 75%;background: #baeced;-webkit-animation: ocean-middle 3s infinite;animation: ocean-middle 3s infinite;}.ocean:after {height: 50%;background: #ace6f1;-webkit-animation: ocean-bottom 2s infinite;animation: ocean-bottom 2s infinite;}@-webkit-keyframes ocean-top {0% {-webkit-transform: rotate(0deg);transform: rotate(0deg);}25% {-webkit-transform: rotate(-1deg);transform: rotate(-1deg);}50% {-webkit-transform: rotate(0deg);transform: rotate(0deg);}75% {-webkit-transform: rotate(1deg);transform: rotate(1deg);}100% {-webkit-transform: rotate(0deg);transform: rotate(0deg);}}@keyframes ocean-top {0% {-webkit-transform: rotate(0deg);transform: rotate(0deg);}25% {-webkit-transform: rotate(-1deg);transform: rotate(-1deg);}50% {-webkit-transform: rotate(0deg);transform: rotate(0deg);}75% {-webkit-transform: rotate(1deg);transform: rotate(1deg);}100% {-webkit-transform: rotate(0deg);transform: rotate(0deg);}}@-webkit-keyframes ocean-middle {0% {height: 75%;}50% {height: 77%;-webkit-transform: rotate(2deg);transform: rotate(2deg);}100% {height: 75%;}}@keyframes ocean-middle {0% {height: 75%;}50% {height: 77%;-webkit-transform: rotate(2deg);transform: rotate(2deg);}100% {height: 75%;}}@-webkit-keyframes ocean-bottom {0% {height: 50%;}50% {height: 52%;-webkit-transform: rotate(-2deg);transform: rotate(-2deg);}100% {height: 50%;}}@keyframes ocean-bottom {0% {height: 50%;}50% {height: 52%;-webkit-transform: rotate(-2deg);transform: rotate(-2deg);}100% {height: 50%;}}/*16.绘制小船，及切换夜晚时小船移出显示范围，同样是使用toggleClass*/.boat {position: absolute;width: 50px;height: 0px;border-top: 7px solid #bb7074;border-left: 10px solid transparent;border-right: 10px solid transparent;left: 280px;/* right: -50px;*/top: -5px;-webkit-transform-origin: center bottom;-ms-transform-origin: center bottom;transform-origin: center bottom;-webkit-animation: boat 5s infinite;animation: boat 5s infinite;-webkit-animation-delay: 0.25s;animation-delay: 0.25s;-webkit-transition: all 4s ease-in-out;-o-transition: all 4s ease-in-out;transition: all 4s ease-in-out;}.boat-sail {margin-left: -350px;}/*17.绘制船帆*/.boat,
.boat:before,
.boat:after {position: absolute;z-index: 200;}.boat:before,
.boat:after {width: 0;height: 0;border: 0 solid transparent;}.boat:before {bottom: 8px;right: -6px;border-right-width: 15px;border-left-width: 0px;border-bottom: 30px solid #bb7074;}.boat:after {bottom: 8px;right: 11px;border-right-width: 0px;border-left-width: 20px;border-bottom: 48px solid #bb7074;}/*17.设置小船在海洋上浮动的动画*/@-webkit-keyframes boat {0% {-webkit-transform: rotate(1deg)translate(2px, 0px);transform: rotate(1deg)translate(2px, 0px);}25% {-webkit-transform: rotate(-1deg) translate(-2px, -2px);transform: rotate(-1deg) translate(-2px, -2px);}50% {-webkit-transform: rotate(1deg) translate(1px, 0px);transform: rotate(1deg) translate(1px, 0px);}75% {-webkit-transform: rotate(-1deg) translate(-1px, -2px);transform: rotate(-1deg) translate(-1px, -2px);}100% {-webkit-transform: rotate(1deg) translate(2px, 0px);transform: rotate(1deg) translate(2px, 0px);}}@keyframes boat {0% {-webkit-transform: rotate(1deg)translate(2px, 0px);transform: rotate(1deg)translate(2px, 0px);}25% {-webkit-transform: rotate(-1deg) translate(-2px, -2px);transform: rotate(-1deg) translate(-2px, -2px);}50% {-webkit-transform: rotate(1deg) translate(1px, 0px);transform: rotate(1deg) translate(1px, 0px);}75% {-webkit-transform: rotate(-1deg) translate(-1px, -2px);transform: rotate(-1deg) translate(-1px, -2px);}100% {-webkit-transform: rotate(1deg) translate(2px, 0px);transform: rotate(1deg) translate(2px, 0px);}}/*18.绘制月亮，与太阳差不多*/.moon {position: absolute;width: 90px;height: 90px;border-radius: 50%;background: -webkit-gradient(linear,
left top,
left bottom,from(#fefefe),to(#fffbe8));background: -webkit-linear-gradient(#fefefe, #fffbe8);background: -o-linear-gradient(#fefefe, #fffbe8);background: linear-gradient(#fefefe, #fffbe8);opacity: 0;left: 80px;margin-top: 90px;-webkit-transition: opacity 1s ease;-o-transition: opacity 1s ease;transition: opacity 1s ease;}.moon-fade {opacity: 0.3;-webkit-transition-delay: 4s;-o-transition-delay: 4s;transition-delay: 4s;}/*19.设置三只鸟儿的位置及样式*/.bird:before,
.bird:after {border: 2px solid #bb7074;border-bottom: 0;width: 18px;height: 8px;z-index: 200;}.bird {position: absolute;-webkit-animation: bird 1s infinite;animation: bird 1s infinite;z-index: 200;-webkit-transition: all 2s ease-in-out;-o-transition: all 2s ease-in-out;transition: all 2s ease-in-out;}.birds-fly {margin-left: 150px;margin-top: -100px;}.bird:after {border-top-left-radius: 18px;border-top-right-radius: 18px;border-right: 0;-webkit-animation: wing-right 1s infinite;animation: wing-right 1s infinite;-webkit-transform-origin: bottom left;-ms-transform-origin: bottom left;transform-origin: bottom left;}.bird:before {left: -19px;border-top-right-radius: 18px;border-top-left-radius: 18px;border-left: 0;-webkit-animation: wing-left 1s infinite;animation: wing-left 1s infinite;-webkit-transform-origin: bottom right;-ms-transform-origin: bottom right;transform-origin: bottom right;}.bird-1 {left: 240px;top: 140px;-webkit-transform: scale(0.9)rotate(10deg);-ms-transform: scale(0.9)rotate(10deg);transform: scale(0.9)rotate(10deg);-webkit-animation-delay: 0.4s;animation-delay: 0.4s;}.bird-2 {left: 280px;top: 120px;-webkit-transform: scale(0.8)rotate(-5deg);-ms-transform: scale(0.8)rotate(-5deg);transform: scale(0.8)rotate(-5deg);-webkit-animation-delay: 0.2s;animation-delay: 0.2s;}.bird-3 {left: 250px;top: 100px;-webkit-transform: scale(1)rotate(8deg);-ms-transform: scale(1)rotate(8deg);transform: scale(1)rotate(8deg);}/*20.设置鸟儿飞行的动画，从小变大，展现从远处飞来的动画，以及翅膀的挥动（wing-left/wing-right），在步骤19中调用该动画*/@-webkit-keyframes bird {0% {-webkit-transform: translate(0px, 0px);transform: translate(0px, 0px);}50% {-webkit-transform: translate(2px, -3px);transform: translate(2px, -3px);}100% {-webkit-transform: translate(0px, 0px);transform: translate(0px, 0px);}}@keyframes bird {0% {-webkit-transform: translate(0px, 0px);transform: translate(0px, 0px);}50% {-webkit-transform: translate(2px, -3px);transform: translate(2px, -3px);}100% {-webkit-transform: translate(0px, 0px);transform: translate(0px, 0px);}}@-webkit-keyframes wing-right {0% {-webkit-transform: rotate(0deg);transform: rotate(0deg);}50% {-webkit-transform: rotate(10deg);transform: rotate(10deg);}100% {-webkit-transform: rotate(0deg);transform: rotate(0deg);}}@keyframes wing-right {0% {-webkit-transform: rotate(0deg);transform: rotate(0deg);}50% {-webkit-transform: rotate(10deg);transform: rotate(10deg);}100% {-webkit-transform: rotate(0deg);transform: rotate(0deg);}}@-webkit-keyframes wing-left {0% {-webkit-transform: rotate(0deg);transform: rotate(0deg);}50% {-webkit-transform: rotate(-10deg);transform: rotate(-10deg);}100% {-webkit-transform: rotate(0deg);transform: rotate(0deg);}}@keyframes wing-left {0% {-webkit-transform: rotate(0deg);transform: rotate(0deg);}50% {-webkit-transform: rotate(-10deg);transform: rotate(-10deg);}100% {-webkit-transform: rotate(0deg);transform: rotate(0deg);}}/*21.首先设置山峰图层的位置，定位山峰的位置，然后绘制三个图层的山峰，黄色，粉色，红色依次对应top，middle，back三层山峰*/.mountains {position: absolute;width: 100%;/* background-color: #ccc;*/height: 20%;bottom: 35%;/* overflow: hidden;*/}.mountains-bottom {opacity: 0.5;-webkit-transform-origin: center;-ms-transform-origin: center;transform-origin: center;-webkit-transform: scaleY(-1);-ms-transform: scaleY(-1);transform: scaleY(-1);top: 0;position: fixed;overflow: hidden;height: 31.5%;}.mountains div,
.mountains div:after,
.mountains div:before {border-radius: 50%;position: absolute;z-index: 200;}.mountains * {-webkit-transition: background 3s ease;-o-transition: background 3s ease;transition: background 3s ease;-webkit-transition-delay: 2s;-o-transition-delay: 2s;transition-delay: 2s;}.mountain-top,
.mountain-top * {background: #fffcdd;}.mountain-top {width: 200px;height: 90px;top: 18px;right: 0;margin-right: -50px;}.mountain-top-1 {position: absolute;width: 250px;height: 80px;top: 15px;right: 0;margin-right: 150px;}/*夜晚的山*/.mountain-top-night {background: #614da2;}.mountain-middle,
.mountain-middle * {background: #fee1cb;}.mountain-middle {width: 180px;height: 120px;top: 12px;margin-left: 180px;}.mountain-middle-1 {width: 200px;height: 100px;top: 3px;margin-left: -110px;}.mountain-middle-2 {width: 220px;height: 150px;margin-left: -250px;}.mountain-middle-night {background: #6154a4;}.mountain-back,
.mountain-back * {background: #fec6b9;}.mountain-back {width: 180px;height: 120px;top: 0px;}.mountain-back-1 {width: 200px;height: 100px;top: 3px;margin-left: 80px;}.mountain-back-2 {width: 150px;height: 80px;margin-left: 250px;}.mountain-back-night {background: #7980c8;}/*22.设置云朵图层的位置，定位云朵位置。*/.cloud,
.cloud:after,
.cloud:before {background: #fff;position: absolute;z-index: 500;}.cloud-1 {left: 310px;top: 50px;}.cloud-2 {left: 280px;top: 150px;-webkit-animation-delay: 0.2s;animation-delay: 0.2s;}.cloud-3 {left: 410px;top: 190px;-webkit-animation-delay: 0.4s;animation-delay: 0.4s;}.cloud-4 {left: 160px;top: 120px;-webkit-animation-delay: 0.6s;animation-delay: 0.6s;}.cloud-5 {left: 60px;top: 170px;-webkit-animation-delay: 0.8s;animation-delay: 0.8s;}.cloud-6 {left: 0px;top: 100px;-webkit-animation-delay: 1s;animation-delay: 1s;}/*23.绘制云朵*/.cloud {width: 65px;height: 12px;border-radius: 20px;-webkit-animation: cloud 4s infinite;animation: cloud 4s infinite;}/*24.*/.cloud:after {border-radius: 50%;height: 30px;left: 27px;top: -18px;width: 30px;}/*25.*/.cloud:before {border-radius: 50%;height: 20px;left: 12px;top: -11px;width: 20px;}/*26.添加云朵的浮动动画*/@-webkit-keyframes cloud {0% {-webkit-transform: translate(0px, 0px);transform: translate(0px, 0px);}25% {-webkit-transform: translate(2px, 2px);transform: translate(2px, 2px);}50% {-webkit-transform: translate(0px, 0px);transform: translate(0px, 0px);}75% {-webkit-transform: translate(-1px, -1px);transform: translate(-1px, -1px);}100% {-webkit-transform: translate(0px, 0px);transform: translate(0px, 0px);}}@keyframes cloud {0% {-webkit-transform: translate(0px, 0px);transform: translate(0px, 0px);}25% {-webkit-transform: translate(2px, 2px);transform: translate(2px, 2px);}50% {-webkit-transform: translate(0px, 0px);transform: translate(0px, 0px);}75% {-webkit-transform: translate(-1px, -1px);transform: translate(-1px, -1px);}100% {-webkit-transform: translate(0px, 0px);transform: translate(0px, 0px);}}/*27.加入小星星，并添加闪烁动画，步骤还是和之前一样*/.stars *,
.stars *:before,
.stars *:after {border-radius: 50%;background-color: #fff;position: absolute;}.stars {opacity: 0;-webkit-transition: opacity 2s ease;-o-transition: opacity 2s ease;transition: opacity 2s ease;}.stars-fade {opacity: 1;-webkit-transition-delay: 4s;-o-transition-delay: 4s;transition-delay: 4s;}.star-group-1 {width: 5px;height: 5px;left: 225px;top: 120px;animation: twinkle 2s infinite linear;}.star-group-1:before {width: 4px;height: 4px;left: 50px;top: 18px;opacity: 0.8;}.star-group-1:after {width: 3px;height: 3px;left: -35px;top: 35px;opacity: 1;}.star-group-2 {width: 5px;height: 5px;left: 25px;top: 175px;animation: twinkle 1s infinite linear;}.star-group-2:before {width: 4px;height: 4px;left: 40px;top: 14px;opacity: 0.8;}.star-group-2:after {width: 3px;height: 3px;left: 30px;top: -40px;opacity: 1;}.star-group-3 {width: 5px;height: 5px;left: 125px;top: 50px;animation: twinkle 0.8s infinite linear;}.star-group-3:before {width: 4px;height: 4px;left: 50px;top: 20px;opacity: 0.8;}.star-group-3:after {width: 3px;height: 3px;left: 90px;top: -20px;opacity: 1;}.star-group-4 {width: 5px;height: 5px;left: 300px;top: 100px;animation: twinkle 1.2s infinite linear;}.star-group-4:before {width: 3px;height: 3px;left: 80px;top: 60px;opacity: 0.8;}.star-group-4:after {width: 3px;height: 3px;left: 50px;top: -20px;opacity: 1;}/*28.绘制流星及动画*/@-webkit-keyframes twinkle {0% {opacity: 1;}25% {opacity: 0.3;}50% {opacity: 0.8;}75% {opacity: 0.5;}100% {opacity: 0.8;}}@keyframes twinkle {0% {opacity: 1;}25% {opacity: 0.3;}50% {opacity: 0.8;}75% {opacity: 0.5;}100% {opacity: 0.8;}}.shooting-star {position: absolute;background: -webkit-gradient(linear,
left top,
right top,from(rgba(255, 255, 255, 1)),to(rgba(255, 255, 255, 0)));background: -webkit-linear-gradient(left,rgba(255, 255, 255, 1) 0%,rgba(255, 255, 255, 0) 100%);background: -o-linear-gradient(left,rgba(255, 255, 255, 1) 0%,rgba(255, 255, 255, 0) 100%);background: linear-gradient(to right,rgba(255, 255, 255, 1) 0%,rgba(255, 255, 255, 0) 100%);width: 35px;height: 3px;left: 310px;top: 10px;-webkit-transform-origin: left;-ms-transform-origin: left;transform-origin: left;-webkit-transform: rotate(-40deg);-ms-transform: rotate(-40deg);transform: rotate(-40deg);}.shooting {-webkit-animation: shooting-star 2s 2 ease-in-out;animation: shooting-star 2s 2 ease-in-out;-webkit-animation-delay: 5s;animation-delay: 5s;}@-webkit-keyframes shooting-star {100% {-webkit-transform: rotate(-40deg)translateX(-450px);transform: rotate(-40deg)translateX(-450px);}}@keyframes shooting-star {100% {-webkit-transform: rotate(-40deg)translateX(-450px);transform: rotate(-40deg)translateX(-450px);}}/*29.设置字体的位置及样式*/p a:link,
p a:active,
p a:visited {color: inherit;text-decoration: none;border-bottom: 1px dotted;border-bottom-color: inherit;opacity: 0.6;}h1,
p {color: #bb7074;-webkit-transition: color 3s;-o-transition: color 3s;transition: color 3s;-webkit-transition-delay: 2s;-o-transition-delay: 2s;transition-delay: 2s;text-align: center;}h1 {margin: 60px 0 10px 0;font-size: 30px;position: relative;}p {font-size: 16px;line-height: 16px;margin: 40px;position: relative;opacity:0.6;}p#subtitle {margin-top: 10px;}.text-color {color: #7980c8;}
三、JS（index.js）
22. 设置元素间属性转换
js部分主要是元素的变换，日夜交替时，显示或者隐藏某个元素，较为简单
$(function () {$('.sun').click(function (e) {e.stopPropagation();$("html").toggleClass('container-night');$(".sky-night").toggleClass('sky-night-fade');$("p, h1").toggleClass('text-color');$(".ocean-night").toggleClass('ocean-night-fade');$(".moon").toggleClass('moon-fade');$(".ocean").toggleClass('animation-stop');$(".bird").toggleClass('birds-fly');$(".boat").toggleClass('boat-sail');$(".mountain-top, .mountain-top >*").toggleClass('mountain-top-night');$(".mountain-middle, .mountain-middle >*").toggleClass('mountain-middle-night');$(".mountain-back, .mountain-back >*").toggleClass('mountain-back-night');$(".cloud").delay(2500).fadeToggle(2500);$(".stars").toggleClass('stars-fade');$(".shooting-star").toggleClass('shooting');var angle = ($('.sun-container').data('angle') + 360) || 360;$('.sun-container').css({'transform': 'rotate(' + angle + 'deg)'});$('.sun-container').data('angle', angle);});});
至此，我们的纯代码绘制动画就完成啦！
运行效果：
