.top_title{
        margin: 0 auto;
        text-align: center;
        line-height: 50px;
        font-size: 20px;
        background-color: #308BF3;
        color: #ffffff;
        font-weight: bold;
        position: relative;
      }
      .top_xxx{
        position: absolute; 
        right: 5px; 
        top: 5px; 
        padding: 5px;
        cursor: pointer; 
        font-size: 18px; 
        color: #ffffff;
        line-height: 18px
      }
      .top_cont span.top_cont_span{
        display: block;
        margin: 10px;
        text-indent: 2em;
        font-size: 16px;
        line-height: 25px;
      }
      .top_btn{
        display: block;
        width: 150px;
        line-height: 40px;
        height: 40px;
        margin: 16px auto;
        background-color: #FFA127;
        color: #ffffff;
        border-radius: 20px;
        text-decoration: none;
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: bold;
      }
      .top_btn:hover{
        color:#ffffff !important;
      }
      .top_btn_img{
        width: 30px;
        height: 30px;
        vertical-align: middle;
        margin-right: 10px;
      }
      .nobg{
        background-color: unset !important;
      }
      .pt{
        padding-top: 0 !important;
      }
      .de_left_fixed{
        position: fixed;
        top: 25%;
        left: 1%;
        border: 1px solid #e2f1ff;
        margin-bottom: 24px;
        width: 240px;
        opacity: 0.8;
        background-color: #E2F1FF;
      }
      .de_bottom_btn{
        cursor: pointer; 
        background-color: #308BF3;
        display: inline-block;
        padding: 5px 8px;
        border-radius: 10px;
        position: fixed;
        top: 25%;
        left: -10px;
        display: none;
        padding-left: 20px;

      }
      .de_bottom_btn div{
        padding-right: 10px;
        color: #ffffff;
        line-height: 25px;
        font-weight: bold;
      }
      .de_bottom_em{
        display: block;
        width: 0;
        height: 0;
        border-top: 10px solid transparent;
        border-left: 10px solid #ffffff;
        border-right: 10px solid transparent;
        border-bottom: 10px solid transparent;
      }