学习CSS3，模拟春雪漫天飘的动画效果

清明时节雨纷纷，但有些地方却下起了大雪，今天我们就用所学的CSS3知识，模拟一下夜晚漫天飘雪的场景吧。

目录

1. 实现思路

2. 部分HTML代码 

3. 夜空的背景 

4. 雪花的样式 

5. 粒子飞升效果 

6. HTML完整源代码 

7. CSS3完整源代码

8.  最后 

1. 实现思路

• DIV布局的使用
• 整体背景radial-gradient属性的使用
• 夜空rotate属性的使用
• 雪花radial-gradient属性的使用
• 雪花移动动画animation属性的使用
• 雪花移动过程中translate3d属性的使用

  2. 部分HTML代码 

  因为雪花的元素是相同的，只是移动的起点，移动过程，移动的终点不同，所以HTML元素大致相同，这里我们就不把所有的元素都粘贴过来了，稍后会粘贴出所有源代码，你可以拿到源代码放到自己的网页里，即可看到漫天飘雪的场景啦。

    
      
    
    
      
    
    
      
    
    ......
    
  

  3. 夜空的背景 

  夜空为了绚烂一些，肯定不是能是纯黑色，需要做一定的过渡效果，雪花飘落才会更完美，这里用到了background-image: radial-gradient  等CSS属性

  body {
    background-image: radial-gradient(#021027, #000000);
  }
  .container {
    width: 100%;
    height: 100%;
    overflow: hidden;
    transform: rotate(180deg);
  }

  4. 雪花的样式 

  雪花虽然HTML元素相同，但表现形式却不同。他有自己的大小，明暗，移动轨迹，等等，越随机，才能越表现的真实而完美

  .circle-container .circle {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    mix-blend-mode: screen;
    background-image: radial-gradient(#99ffff, #99ffff 10%, rgba(153, 255, 255, 0) 56%);
    -webkit-animation: fadein-frames 200ms infinite, scale-frames 2s infinite;
            animation: fadein-frames 200ms infinite, scale-frames 2s infinite;
  }
  @-webkit-keyframes scale-frames {
    0% {
      -webkit-transform: scale3d(0.4, 0.4, 1);
              transform: scale3d(0.4, 0.4, 1);
    }
    50% {
      -webkit-transform: scale3d(2.2, 2.2, 1);
              transform: scale3d(2.2, 2.2, 1);
    }
    100% {
      -webkit-transform: scale3d(0.4, 0.4, 1);
              transform: scale3d(0.4, 0.4, 1);
    }
  }

  

  5. 粒子飞升效果 

  可能在第3步，大家看到了 transform: rotate(180deg); 的代码设置，这是做了另外的考虑。满天飞雪的场景，其实如果旋转屏幕，可以做为那种地面上有某种粒子，逐渐向上飞升的效果，也是非常棒的。喜欢的小伙伴可以试一下。

  

  6. HTML完整源代码 

  下面把完整源代码放出来，需要的小伙伴可以直接COPY过去，放到自己网页上就可以看到满天飞雪的效果啦

  
  漫天飘雪
  
  
    
      
    
    
      
    
    
      
    
    
      
    
    
      
    
    
      
    
    
      
    
    
      
    
    
      
    
    
      
    
    
      
    
    
      
    
    
      
    
    
      
    
    
      
    
    
      
    
  

  7. CSS3完整源代码

  html,
  body {
    width: 100%;
    height: 100%;
    padding:0;margin:0;
  }
  body {
    background-image: radial-gradient(#021027, #000000);
  }
  .container {
    width: 100%;
    height: 100%;
    overflow: hidden;
    transform: rotate(180deg);
  }
  .circle-container {
    position: absolute;
    -webkit-transform: translateY(-10vh);
            transform: translateY(-10vh);
    -webkit-animation-iteration-count: infinite;
            animation-iteration-count: infinite;
    -webkit-animation-timing-function: linear;
            animation-timing-function: linear;
  }
  .circle-container .circle {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    mix-blend-mode: screen;
    background-image: radial-gradient(#99ffff, #99ffff 10%, rgba(153, 255, 255, 0) 56%);
    -webkit-animation: fadein-frames 200ms infinite, scale-frames 2s infinite;
            animation: fadein-frames 200ms infinite, scale-frames 2s infinite;
  }
  @-webkit-keyframes scale-frames {
    0% {
      -webkit-transform: scale3d(0.4, 0.4, 1);
              transform: scale3d(0.4, 0.4, 1);
    }
    50% {
      -webkit-transform: scale3d(2.2, 2.2, 1);
              transform: scale3d(2.2, 2.2, 1);
    }
    100% {
      -webkit-transform: scale3d(0.4, 0.4, 1);
              transform: scale3d(0.4, 0.4, 1);
    }
  }
  @keyframes scale-frames {
    0% {
      -webkit-transform: scale3d(0.4, 0.4, 1);
              transform: scale3d(0.4, 0.4, 1);
    }
    50% {
      -webkit-transform: scale3d(2.2, 2.2, 1);
              transform: scale3d(2.2, 2.2, 1);
    }
    100% {
      -webkit-transform: scale3d(0.4, 0.4, 1);
              transform: scale3d(0.4, 0.4, 1);
    }
  }
  .circle-container:nth-child(1) {
    width: 10px;
    height: 10px;
    -webkit-animation-name: move-frames-1;
            animation-name: move-frames-1;
    -webkit-animation-duration: 8441ms;
            animation-duration: 8441ms;
    -webkit-animation-delay: 4544ms;
            animation-delay: 4544ms;
  }
  @-webkit-keyframes move-frames-1 {
    from {
      -webkit-transform: translate3d(50vw, 102vh, 0);
              transform: translate3d(50vw, 102vh, 0);
    }
    to {
      -webkit-transform: translate3d(2vw, -117vh, 0);
              transform: translate3d(2vw, -117vh, 0);
    }
  }
  @keyframes move-frames-1 {
    from {
      -webkit-transform: translate3d(50vw, 102vh, 0);
              transform: translate3d(50vw, 102vh, 0);
    }
    to {
      -webkit-transform: translate3d(2vw, -117vh, 0);
              transform: translate3d(2vw, -117vh, 0);
    }
  }
  .circle-container:nth-child(1) .circle {
    -webkit-animation-delay: 3734ms;
            animation-delay: 3734ms;
  }
  .circle-container:nth-child(2) {
    width: 10px;
    height: 10px;
    -webkit-animation-name: move-frames-2;
            animation-name: move-frames-2;
    -webkit-animation-duration: 9921ms;
            animation-duration: 9921ms;
    -webkit-animation-delay: 5982ms;
            animation-delay: 5982ms;
  }
  @-webkit-keyframes move-frames-2 {
    from {
      -webkit-transform: translate3d(89vw, 108vh, 0);
              transform: translate3d(89vw, 108vh, 0);
    }
    to {
      -webkit-transform: translate3d(72vw, -123vh, 0);
              transform: translate3d(72vw, -123vh, 0);
    }
  }
  @keyframes move-frames-2 {
    from {
      -webkit-transform: translate3d(89vw, 108vh, 0);
              transform: translate3d(89vw, 108vh, 0);
    }
    to {
      -webkit-transform: translate3d(72vw, -123vh, 0);
              transform: translate3d(72vw, -123vh, 0);
    }
  }
  .circle-container:nth-child(2) .circle {
    -webkit-animation-delay: 2516ms;
            animation-delay: 2516ms;
  }
  .circle-container:nth-child(3) {
    width: 3px;
    height: 3px;
    -webkit-animation-name: move-frames-3;
            animation-name: move-frames-3;
    -webkit-animation-duration: 10427ms;
            animation-duration: 10427ms;
    -webkit-animation-delay: 3649ms;
            animation-delay: 3649ms;
  }
  @-webkit-keyframes move-frames-3 {
    from {
      -webkit-transform: translate3d(85vw, 107vh, 0);
              transform: translate3d(85vw, 107vh, 0);
    }
    to {
      -webkit-transform: translate3d(30vw, -133vh, 0);
              transform: translate3d(30vw, -133vh, 0);
    }
  }
  @keyframes move-frames-3 {
    from {
      -webkit-transform: translate3d(85vw, 107vh, 0);
              transform: translate3d(85vw, 107vh, 0);
    }
    to {
      -webkit-transform: translate3d(30vw, -133vh, 0);
              transform: translate3d(30vw, -133vh, 0);
    }
  }
  .circle-container:nth-child(3) .circle {
    -webkit-animation-delay: 731ms;
            animation-delay: 731ms;
  }
  .circle-container:nth-child(4) {
    width: 6px;
    height: 6px;
    -webkit-animation-name: move-frames-4;
            animation-name: move-frames-4;
    -webkit-animation-duration: 10951ms;
            animation-duration: 10951ms;
    -webkit-animation-delay: 8909ms;
            animation-delay: 8909ms;
  }
  @-webkit-keyframes move-frames-4 {
    from {
      -webkit-transform: translate3d(50vw, 104vh, 0);
              transform: translate3d(50vw, 104vh, 0);
    }
    to {
      -webkit-transform: translate3d(74vw, -122vh, 0);
              transform: translate3d(74vw, -122vh, 0);
    }
  }
  @keyframes move-frames-4 {
    from {
      -webkit-transform: translate3d(50vw, 104vh, 0);
              transform: translate3d(50vw, 104vh, 0);
    }
    to {
      -webkit-transform: translate3d(74vw, -122vh, 0);
              transform: translate3d(74vw, -122vh, 0);
    }
  }
  .circle-container:nth-child(4) .circle {
    -webkit-animation-delay: 2526ms;
            animation-delay: 2526ms;
  }
  .circle-container:nth-child(5) {
    width: 5px;
    height: 5px;
    -webkit-animation-name: move-frames-5;
            animation-name: move-frames-5;
    -webkit-animation-duration: 7642ms;
            animation-duration: 7642ms;
    -webkit-animation-delay: 2502ms;
            animation-delay: 2502ms;
  }
  @-webkit-keyframes move-frames-5 {
    from {
      -webkit-transform: translate3d(9vw, 108vh, 0);
              transform: translate3d(9vw, 108vh, 0);
    }
    to {
      -webkit-transform: translate3d(39vw, -126vh, 0);
              transform: translate3d(39vw, -126vh, 0);
    }
  }
  @keyframes move-frames-5 {
    from {
      -webkit-transform: translate3d(9vw, 108vh, 0);
              transform: translate3d(9vw, 108vh, 0);
    }
    to {
      -webkit-transform: translate3d(39vw, -126vh, 0);
              transform: translate3d(39vw, -126vh, 0);
    }
  }
  .circle-container:nth-child(5) .circle {
    -webkit-animation-delay: 2755ms;
            animation-delay: 2755ms;
  }
  .circle-container:nth-child(6) {
    width: 6px;
    height: 6px;
    -webkit-animation-name: move-frames-6;
            animation-name: move-frames-6;
    -webkit-animation-duration: 8439ms;
            animation-duration: 8439ms;
    -webkit-animation-delay: 455ms;
            animation-delay: 455ms;
  }
  @-webkit-keyframes move-frames-6 {
    from {
      -webkit-transform: translate3d(29vw, 101vh, 0);
              transform: translate3d(29vw, 101vh, 0);
    }
    to {
      -webkit-transform: translate3d(21vw, -109vh, 0);
              transform: translate3d(21vw, -109vh, 0);
    }
  }
  @keyframes move-frames-6 {
    from {
      -webkit-transform: translate3d(29vw, 101vh, 0);
              transform: translate3d(29vw, 101vh, 0);
    }
    to {
      -webkit-transform: translate3d(21vw, -109vh, 0);
              transform: translate3d(21vw, -109vh, 0);
    }
  }
  .circle-container:nth-child(6) .circle {
    -webkit-animation-delay: 3506ms;
            animation-delay: 3506ms;
  }
  .circle-container:nth-child(7) {
    width: 8px;
    height: 8px;
    -webkit-animation-name: move-frames-7;
            animation-name: move-frames-7;
    -webkit-animation-duration: 7539ms;
            animation-duration: 7539ms;
    -webkit-animation-delay: 3595ms;
            animation-delay: 3595ms;
  }
  @-webkit-keyframes move-frames-7 {
    from {
      -webkit-transform: translate3d(11vw, 101vh, 0);
              transform: translate3d(11vw, 101vh, 0);
    }
    to {
      -webkit-transform: translate3d(31vw, -125vh, 0);
              transform: translate3d(31vw, -125vh, 0);
    }
  }
  @keyframes move-frames-7 {
    from {
      -webkit-transform: translate3d(11vw, 101vh, 0);
              transform: translate3d(11vw, 101vh, 0);
    }
    to {
      -webkit-transform: translate3d(31vw, -125vh, 0);
              transform: translate3d(31vw, -125vh, 0);
    }
  }
  .circle-container:nth-child(7) .circle {
    -webkit-animation-delay: 749ms;
            animation-delay: 749ms;
  }
  .circle-container:nth-child(8) {
    width: 4px;
    height: 4px;
    -webkit-animation-name: move-frames-8;
            animation-name: move-frames-8;
    -webkit-animation-duration: 7480ms;
            animation-duration: 7480ms;
    -webkit-animation-delay: 2680ms;
            animation-delay: 2680ms;
  }
  @-webkit-keyframes move-frames-8 {
    from {
      -webkit-transform: translate3d(15vw, 101vh, 0);
              transform: translate3d(15vw, 101vh, 0);
    }
    to {
      -webkit-transform: translate3d(88vw, -111vh, 0);
              transform: translate3d(88vw, -111vh, 0);
    }
  }
  @keyframes move-frames-8 {
    from {
      -webkit-transform: translate3d(15vw, 101vh, 0);
              transform: translate3d(15vw, 101vh, 0);
    }
    to {
      -webkit-transform: translate3d(88vw, -111vh, 0);
              transform: translate3d(88vw, -111vh, 0);
    }
  }
  .circle-container:nth-child(8) .circle {
    -webkit-animation-delay: 1888ms;
            animation-delay: 1888ms;
  }
  .circle-container:nth-child(9) {
    width: 2px;
    height: 2px;
    -webkit-animation-name: move-frames-9;
            animation-name: move-frames-9;
    -webkit-animation-duration: 9087ms;
            animation-duration: 9087ms;
    -webkit-animation-delay: 9461ms;
            animation-delay: 9461ms;
  }
  @-webkit-keyframes move-frames-9 {
    from {
      -webkit-transform: translate3d(100vw, 107vh, 0);
              transform: translate3d(100vw, 107vh, 0);
    }
    to {
      -webkit-transform: translate3d(40vw, -130vh, 0);
              transform: translate3d(40vw, -130vh, 0);
    }
  }
  @keyframes move-frames-9 {
    from {
      -webkit-transform: translate3d(100vw, 107vh, 0);
              transform: translate3d(100vw, 107vh, 0);
    }
    to {
      -webkit-transform: translate3d(40vw, -130vh, 0);
              transform: translate3d(40vw, -130vh, 0);
    }
  }
  .circle-container:nth-child(9) .circle {
    -webkit-animation-delay: 1721ms;
            animation-delay: 1721ms;
  }
  .circle-container:nth-child(10) {
    width: 8px;
    height: 8px;
    -webkit-animation-name: move-frames-10;
            animation-name: move-frames-10;
    -webkit-animation-duration: 9860ms;
            animation-duration: 9860ms;
    -webkit-animation-delay: 8969ms;
            animation-delay: 8969ms;
  }
  @-webkit-keyframes move-frames-10 {
    from {
      -webkit-transform: translate3d(74vw, 110vh, 0);
              transform: translate3d(74vw, 110vh, 0);
    }
    to {
      -webkit-transform: translate3d(30vw, -127vh, 0);
              transform: translate3d(30vw, -127vh, 0);
    }
  }
  @keyframes move-frames-10 {
    from {
      -webkit-transform: translate3d(74vw, 110vh, 0);
              transform: translate3d(74vw, 110vh, 0);
    }
    to {
      -webkit-transform: translate3d(30vw, -127vh, 0);
              transform: translate3d(30vw, -127vh, 0);
    }
  }
  .circle-container:nth-child(10) .circle {
    -webkit-animation-delay: 1801ms;
            animation-delay: 1801ms;
  }
  .circle-container:nth-child(11) {
    width: 1px;
    height: 1px;
    -webkit-animation-name: move-frames-11;
            animation-name: move-frames-11;
    -webkit-animation-duration: 9292ms;
            animation-duration: 9292ms;
    -webkit-animation-delay: 9812ms;
            animation-delay: 9812ms;
  }

  8.  最后 

  最后呢，祝大家2023年心想事成

  • 【手把手、从零到一】SpringBoot+SpringCloud+Vue前后端分离实战项目，专栏持续火热更新中。。。
  • 主流技术，细节到位，前后端由两位【十年多】的高级架构师操刀
  • 作为毕设项目、入门项目、或者准备进阶提升竞争力的小伙伴，可以【订阅本专栏】哦
  • 前端部分 ：https://blog.csdn.net/xingyu_qie/category_12222258.html
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