/* 框架 */
     section {
         position: relative;
         z-index: 1;
         overflow: hidden;
         width: 100%;
     }


     /* 标题 */
     .indexTitle {
         width: 100%;
         overflow: hidden;
         display: flex;
         justify-content: center;
     }

     .indexTitle img {
         width: 1200px;
         margin: 0 auto;
     }