.pb-rn
        {
            width:100%;
        }
        .pb-rn .pb-registernow
        {
             margin:0 auto;
             width:85%;
             padding: 35px 40px 35px 40px;
             overflow:hidden;
             box-shadow: 0px 0px 30px 0px rgb(1 87 140 / 25%);
             transition: background 0.3s, border 0.3s, border-radius 0.3s, box-shadow 0.3s;
             margin-bottom: 30px;
             margin-top:50px;
             border-radius: 25px 25px 25px 25px;
        }
        .pb-rn .pb-registernow .pb-c-signupservices
        {
             width:65%;
            float:left;
            font-size: 29px;
            color: #122B46;
            font-family: 'SF UI Display', sans-serif;
            font-weight: 400;
            margin: 0px 0px 15px 0px;
            text-align: center;
            vertical-align:middle;
        }
        .pb-rn .pb-registernow .pb-c-registernow
        {
             width:35%;
            float:right;
        }
          .pb-rn .pb-registernow .pb-c-registernow a
          {
              background-color: #81C39D;
          }


          /*returnTop*/
p #back-to-top{
    position:fixed;
    display:none;
    bottom:100px;
    right:80px;
}
p #back-to-top a{
    text-align:center;
    text-decoration:none;
    color:#d1d1d1;
    display:block;
    width:64px;
    /*使用CSS3中的transition属性给跳转链接中的文字添加渐变效果*/
    -moz-transition:color 1s;
    -webkit-transition:color 1s;
    -o-transition:color 1s;
}
p #back-to-top a:hover{
    color:#979797;
}
p #back-to-top a span{
    background:transparent url(/static/imgs/sprite.png) no-repeat -25px -290px;
    border-radius:6px;
    display:block;
    height:64px;
    width:56px;
    margin-bottom:5px;
    /*使用CSS3中的transition属性给<span>标签背景颜色添加渐变效果*/
    -moz-transition:background 1s;
    -webkit-transition:background 1s;
    -o-transition:background 1s;
}
        #back-to-top a:hover span {
            background: transparent url(/static/imgs/sprite.png?1202) no-repeat -25px -290px;
        }