@media screen and (min-width: 1366px){
    
}
/* 超小屏幕 */
@media screen and (max-width:768px){
    #app{
        max-width: 100vw;
        overflow-x: hidden;
    }
    .searchbtn{
        width: 130px;
        height: 40px;
        line-height: 40px;
        text-align: center;
        color: #fff;
        background-color: #056e9b;
        display: block;
        letter-spacing: 2px;
        cursor: pointer;
        font-size: 18px;
        margin-top: 15px;
        border:0
    }
}
/* 小屏幕 */
@media screen and (min-width:769px) and (max-width:991px) {
    #app{
        max-width: 100vw;
        overflow-x: hidden;
    }
    .font12 {
        height: 35px;
        line-height: 35px;
        text-align: right;
        font-weight: normal;
        color: #555;
      }
      .searchbtn{
        width: 130px;
        height: 40px;
        line-height: 40px;
        text-align: center;
        color: #fff;
        background-color: #056e9b;
        display: block;
        letter-spacing: 2px;
        cursor: pointer;
        font-size: 18px;
        margin-top: 15px;
        border:0
    }
}
/* 中等屏幕 */
@media screen and (min-width:992px) and (max-width:1200px) {
    .font12 {
        height: 35px;
        line-height: 35px;
        text-align: right;
        font-weight: normal;
        color: #555;
      }
      .searchbtn{
        width: 130px;
        height: 40px;
        line-height: 40px;
        text-align: center;
        color: #fff;
        background-color: #056e9b;
        margin: 0 auto;
        display: block;
        letter-spacing: 2px;
        cursor: pointer;
        font-size: 18px;
        margin-top: 15px;
        border:0
    }
}
/* 大屏 */
@media screen and (min-width:1201px) and (max-width:1920px){
    .txt_keywords{width: 80%;}
    .font12 {
        width: 100px;
        height: 35px;
        line-height: 35px;
        margin-left: 25px;
        text-align: right;
        font-weight: normal;
        color: #555;
        float:left;
    }
    .searchbtn{
        width: 130px;
        height: 40px;
        line-height: 40px;
        text-align: center;
        color: #fff;
        background-color: #056e9b;
        margin: 0 auto;
        display: block;
        letter-spacing: 2px;
        cursor: pointer;
        font-size: 18px;
        margin-top: 15px;
        border:0
    }
}
/* 超大屏 */
@media screen and (min-width:1921px) {
    .txt_keywords{width: 80%;}

    .font12 {
        width: 100px;
        height: 35px;
        line-height: 35px;
        margin-left: 25px;
        text-align: right;
        font-weight: normal;
        color: #555;
        float:left;
      }

    .box .keywords{overflow:hidden;margin-bottom:10px;}
    .searchbtn{
        width: 130px;
        height: 40px;
        line-height: 40px;
        text-align: center;
        color: #fff;
        background-color: #056e9b;
        margin: 0 auto;
        display: block;
        letter-spacing: 2px;
        cursor: pointer;
        font-size: 18px;
        margin-top: 15px;
        border:0
    }
}