.box .main{
    width: 1200px;
    margin: 0 auto;
}
.box .title{
    width: 100%;
    height: 80px;
    background-color: #202020;
}

.box .title .txt{
    color: #fff;
    font-size: 30px;
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.box .title .txt a{
    /* width: 86px; */
    /* border: 1px #FFF solid; */
    padding: 5px 15px;
    font-size: 16px;
    border-radius: 15px;
    text-align: center;
    background-color: #ee4e5b;
}
.box .title .txt a:hover{
    color: #fff;
}
.box .tabs{
    width: 100%;
    height: 51px;
    border-bottom: 1px solid #ccc;
    background-color: #f5f5f5;
}
.box .tabs2{
    position: fixed;
    top: 84px;
    z-index: 100;
}
.box .tabs3{
    position: fixed;
    top: 64px;
    z-index: 100;
}
.box .tabs .option{
    height: 100%;
    display: flex;
    justify-content: flex-start;
    align-items: center;
}
.box .tabs .tab{
    display: inline-block;
    padding: 3px 11px;
    color: #666;
    background-color: #fafafa;
    border: 1px solid #e5e5e5;
    font-size: 14px;
    border-radius: 15px;
    margin-right: 12px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.box .tabs .tab_active{
    color: #fff;
    background-color: #ee4e5b;
}
.box .content{
    margin-top: 70px;
    font-size: 16px;
    color: #333;
    padding-bottom: 50px;
}
.box .content .browser .brow{
    margin-top: 50px;
}
.box .content .browser .brow p{
    font-size: 16px;
    font-weight: bold;
}
.box .content .browser .brow .brow_img{
    max-width: 100%;
    padding: 20px;
    margin-left: 37px;
    background-color: #f9f9f9;
    display: inline-block;
    margin-top: 5px;
}
.box .content .browser .brow .tit{
    font-weight: bold;
    font-size: 16px;
}
.box .content .browser .brow .tit2{
    margin-bottom: 20px;
    position: relative;
    padding-left: 37px;
}
.box .content .browser .brow .tit2 span{
    position: absolute;
    width: 27px;
    height: 27px;
    border-radius: 50%;
    color: #fff;
    background-color: #333;
    left: 0;
    top: -1px;
    text-align: center;
    line-height: 27px;
}

@media (max-width: 1366px){
    .box .main {
        width: 960px;
    }
}
@media (max-width: 960px){
    .box .main {
        width: 750px;
    }
}
@media (max-width: 750px){
    .box .main {
        width: 640px;
    }
}
@media (max-width: 640px){
    .box .main {
        width: 375px;
        padding: 0 10px;
    }
    .box .content .browser .brow .brow_img{
        margin-left: 0;
    }
    .box .title .txt {
        font-size: 21px;
        flex-direction: column;
        justify-content: space-evenly;
        align-items: flex-start;
    }
}
@media (max-width: 374px){
    .box .main {
        width: 100%;
        padding: 0 10px;
    }
    .box .title .txt{
        font-size: 16px;
    }
}
.tiao{
    margin-bottom: 50px !important;
}
.tiao a{
    color: #1473e6;
}