CSS3之animation动画

可用F12开发者工具查看元素及样式，可打开 codepen 在线编辑代码。

<html>
  <div class="animationBox">
    <div class="rotate">旋转动画1</div>
    <div class="play">
      <div class="img">旋转动画2</div>
      <span><p class="p2"></p></span>
      <span><p></p></span>
      <span><p></p></span>
      <span><p class="p2"></p></span>
    </div>
    <div class="elasticity">弹性动画</div>
    <div class="elasticity2">曲线弹性</div>
  </div>
</html>

<style>
  .animationBox {
    overflow: hidden;
  }
  .animationBox > div {
    width: 100px;
    height: 100px;
    background: #eee;
    border-radius: 50%;
    text-align: center;
    line-height: 100px;
    margin: 30px;
    float: left;
  }
  .rotate {
    animation: rotate 5s linear infinite;
  }
  .rotate:hover {
    animation-play-state: paused;
  }
  @keyframes rotate {
    0% {
      transform: rotate(0);
    }
    100% {
      transform: rotate(360deg);
    }
  }
  .animationBox > .play {
    position: relative;
    margin: 50px 30px;
    background: none;
  }
  .play .img {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
    width: 100px;
    height: 100px;
    background: #eee;
    border-radius: 50%;

    animation: rotate 5s linear infinite;
  }
  .play span {
    position: absolute;
    top: 1px;
    left: 1px;
    z-index: 0;
    display: block;
    width: 96px;
    height: 96px;
    border: 1px solid #999;
    border-radius: 50%;
  }
  .play span p {
    display: block;
    width: 4px;
    height: 4px;
    background: #000;
    margin: -2px 0 0 50%;
    border-radius: 50%;
    opacity: 0.5;
  }
  .play span .p2 {
    margin: 50% 0 0 -2px;
  }
  .play span {
    animation: wave 5s linear infinite;
  }
  .play > span:nth-child(3) {
    /* 延迟时间 */
    animation-delay: 1s;
  }
  .play > span:nth-child(4) {
    animation-delay: 2.2s;
  }
  .play > span:nth-child(5) {
    animation-delay: 3.8s;
  }

  @keyframes wave {
    0% {
      transform: scale(1) rotate(360deg);
      opacity: 0.8;
    }
    100% {
      transform: scale(1.8) rotate(0deg);
      opacity: 0;
    }
  }

  .elasticity {
    /* 参数说明
      动画名称 花费时间 贝塞尔曲线 延迟开始时间 播放次数n|infinite  是否反向播放动画
    */
    animation: elasticity 1s linear 2s infinite;
  }

  @keyframes elasticity {
    0% {
      transform: scale(0);
    }
    60% {
      transform: scale(1.1);
    }
    90% {
      transform: scale(1);
    }
  }

  .elasticity2 {
    /**
    贝塞尔曲线 cubic-bezier(x1,y1,x2,y2)

    通过调整贝塞尔曲线可以设置出多种动画效果，比如反弹效果等
    X轴的范围是0~1，Y轴的取值没有规定，但是也不宜过大
    直线：linear，即cubic-bezier(0,0,1,1)

    贝塞尔曲线在线工具：https://cubic-bezier.com/#.17,.67,.83,.67
      */
    animation: elasticity2 1s cubic-bezier(0.39, 0.62, 0.74, 1.39) 2s infinite;
  }
  @keyframes elasticity2 {
    0% {
      transform: scale(0);
    }
    90% {
      transform: scale(1);
    }
  }
</style>

# 贝塞尔曲线 cubic-bezier(x1,y1,x2,y2)

通过调整贝塞尔曲线可以设置出多种动画效果，比如反弹效果等 X 轴的范围是 0~1，Y 轴的取值没有规定，但是也不宜过大。如：直线 linear，即 cubic-bezier(0,0,1,1)

贝塞尔曲线在线工具：https://cubic-bezier.com/#.17,.67,.83,.67 (opens new window)

参考：https://www.w3school.com.cn/css3/index.asp (opens new window)

编辑

上次更新: 2021/08/30, 22:22:05

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