ortant;
      }
  </style>
  <style>
      .main {
          width: 100%;
      }

      .contain {
          position: relative;
          margin: 0 auto;
          height: 220px;
          overflow: hidden; /*设置文案容器高度，超出部分隐藏*/
      }

      .open-btn {
          position: absolute;
          width: 100%;
          bottom: 0;
          height: 80px;
          background: linear-gradient(180deg, rgba(255, 255, 255, 0), #fff); /*实现渐变效果，遮罩效果*/
      }

    