.d-flex {
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
}

.justify-content-center {
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
}

.align-items-center {
    -webkit-box-align: center;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
}

section {
    width: 100%;
    min-height: calc(100vh - 50px);
    position: relative;
}
.content{
    width: 100%;
}
.content img {
    display: block;
    width: 2.4rem;
    margin: 0 auto;
}

.no-tencent.content {
    padding-top: 50px;
}

.no-tencent.content a {
    text-decoration: none;
}
.content .kefu img {
    width: 1.4rem;
}
.content p{
    font-size: 16px;
    font-family:PingFangSC-Regular,PingFang SC;
    font-weight:400;
    color:rgba(145,145,145,1);
    text-align: center;
    margin-top: -80px;
}
.content p i{
    color: #277cf2;
    font-size: 18px;
}
.content span{
    display: block;
    margin: 0 auto;
    width:100px;
    height:36px;
    border-radius:2px;
    font-size:15px;
    font-family:PingFangSC-Regular,PingFang SC;
    font-weight:400;
    color:#277CF2;
    line-height:35px;
    text-align: center;
    margin-top: 28px;
    border:1px solid #277CF2;
    position: relative  ;
}
.content em{
    display: inline-block;
    margin-bottom: 5px;
}
.bottom{
    width:650px;
    position: absolute;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
}
.bottom img{
    width:650px;
    height:108px;
}
.bottom img:nth-of-type(2){
    margin-top: 10px;
}
@media screen and (max-width: 1500px){
    .content img {
        width: 300px;
    }
    .content .kefu img {
        width: 220px;
    }

    .content p{
        margin-top: -50px;
    }
    .bottom{
        width:450px;
        position: absolute;
        bottom: 20px;
        left: 50%;
        transform: translateX(-50%);
    }
    .bottom img{
        width:450px;
        height:75px;
    }
    .bottom img:nth-of-type(2){
        margin-top: 10px;
    }
}
@media screen and (max-width: 800px){
    .content {
        padding-top: 0.3rem;
    }
    .content img {
        width: 2.4rem;
    }
    .content .kefu img{
        width: 1.4rem;
    }
    .content p{
        margin-top: -0.6rem;
    }
    .bottom{
        width:3.35rem;
        height:1.2rem;
        position: absolute;
        bottom: 0.5rem;
        left: 50%;
        transform: translateX(-50%);
    }
    .bottom img{
        width:3.35rem;
        height:0.55rem;
    }
    .bottom img:nth-of-type(2){
        margin-top: 0.1rem;
    }
}
@media screen and (max-width: 400px){
    .content p{
        font-size: 0.14rem;
    }
    .content p i{
        font-size: 0.16rem;
    }
}

.footer {
    height: 50px;
}

.footer>img {
    width: 20px;
    height: 20px;
}

.footer>span {
    font-size: 12px;
    color: #919191;
    margin-left: 0.1rem;
}

.bottom-container {
    display: none;
    width: 400px;
    height: 200px;
    margin: 50px auto 0;
    cursor: pointer;
}
.bottom-container .img-pc,
.bottom-container .img-mobile {
    display: block;
    width: 100%;
    height: 100%;
}
.bottom-container .img-mobile {
    display: none;
}

@media screen and (max-width: 750px){
    .bottom-container {
        max-width: 468px;
        max-height: 275px;
        width: 3.75rem;
        height: 2.2rem;
        margin: 0 auto;
        position: absolute;
        left: 0;
        right: 0;
        bottom: 0.1rem;
        background-image: url(//static.3w.cn/static/images/bg-banner.jpg);
    }
    .bottom-container .img-pc {
        display: none;
    }
    .bottom-container .img-mobile {
        display: block;
        width: 80%;
        height: auto
    }
}