/* 页面容器 */
.container {
    width: 100%;
    position: relative;
    overflow-y: auto;
    background-color: #ffffff;
  }
  
  /* 规则图片样式 - 绝对定位，从顶部开始 */
  .rule-image {
    position: absolute;
    top: 0;
    left: 0;
    display: block;
  }