代码来自头条号"前端小智", 侵权删

<!DOCTYPE html><html lang="en"><head>  <meta charset="UTF-8">  <meta http-equiv="X-UA-Compatible" content="IE=edge">  <meta name="viewport" content="width=device-width, initial-scale=1.0">  <title>气泡loading</title>  <style>    *{      margin: 0;      padding: 0;      box-sizing: border-box;    }    body{      display: flex;      justify-content: center;      align-items: center;      min-height: 100vh;      background-color: #111;    }    .container{      display: flex;      justify-content: center;      align-items: center;      flex-direction: column;    }    .box{ /* 气泡的父级元素  */      position: relative;      width: 200px;      height: 200px;      animation: rotateBox 10s linear infinite; /*这块的旋转动画,有跟没有没看进去区别*/    }    @keyframes rotateBox {      0%{        transform: rotate(0deg);      }      100%{        transform: rotate((360deg))      }    }    .circle{      width: 100%;      height: 100%;      position: absolute;      top: 0;      left: 0;      background-color: #38c1ff;      border-radius: 50%;      animation: animation_1 5s linear infinite;    }    .circle:nth-child(2){      background-color: #ff3378;      animation-delay: -2.5s; /*提早第二个圆的动画  以便将两个圆离开*/    }    @keyframes animation_1{ /*气泡的动画 设置变形-scale属性(变大  变小) 和变动的原点 */      0% {        transform: scale(1);        transform-origin: left;      }      50% {        transform: scale(0);        transform-origin: left;      }      50.01% {        transform: scale(0);        transform-origin: right;      }      100% {        transform: scale(1);        transform-origin: right;      }    }        h2{      margin-top: 20px;      font-size: 20px;      font-weight: 400;      letter-spacing: 4px;      color: #fff;    }  </style></head><body>  <div class="container">    <div class="box">      <div class="circle"></div>      <div class="circle"></div>    </div>    <h2>loading</h2>  </div></body></html>