front-end-example/Heatmap.html at master · Joey-Coder/front-end-example · GitHub

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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>热点图</title>
    <style>
      body {
        background-color: #333333;
      }
      .map {
        position: relative;
        height: 600px;
        width: 850px;
        margin: 200px auto;
        background: url("upload/map.png") no-repeat;
      }
      .city {
        position: absolute;
        top: 228px;
        right: 295px;
        color: white;
      }
      .dotted {
        width: 8px;
        height: 8px;
        background-color: #09f;
        border-radius: 50%;
      }
      .city div[class^="pulse"] {
        /* 关键点，定位到重叠 */
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 8px;
        height: 8px;
        box-shadow: 0 0 12px #09d;
        border-radius: 50%;
        animation: pulse 2s linear infinite;
      }
      .city div.pulse2 {
        animation-delay: 0.4s;
      }
      .city div.pulse3 {
        animation-delay: 0.8s;
      }
      @keyframes pulse {
        0% {
        }
        40% {
          /* 不要用scale，效果不好看 */
          /* transform: scale(2); */
          width: 20px;
          height: 20px;
          opacity: 1;
        }
        70% {
          width: 40px;
          height: 40px;
          opacity: 1;
        }
        100% {
          width: 60px;
          height: 60px;
          opacity: 0;
        }
      }
    </style>
  </head>
  <body>
    <div class="map">
      <div class="city">
        <div class="dotted"></div>
        <div class="pulse1"></div>
        <div class="pulse2"></div>
        <div class="pulse3"></div>
      </div>
    </div>
  </body>
</html>