以下为不分HTML代码

<!-- From zuisao.com --> 
<div class="loading">
    <svg width="64px" height="48px">
        <polyline points="0.157 23.954, 14 23.954, 21.843 48, 43 0, 50 24, 64 24" id="back"></polyline>

以下为部分 CSS代码

  /* From zuisao.com */ 
.loading svg polyline {
  fill: none;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.loading svg polyline#back {
  fill: none;
  stroke: #ff4d5033;
}

.loading svg polyline#front {
  fill: none;
  stroke: #ff4d4f;
  stroke-dasharray: 48, 144;
  stroke-dashoffset: 192;