.a_middle{
    padding: 0 0.24rem;
    background-color: #fff;
}
.yx_ims_top{
    padding-top: 10px;
}
.yx_ims_top h3{font-size: 0.3rem; line-height: 0.4rem}
.yx_ims_top h3:after{content: "";display: block;width: 0.15rem;height: 0.4rem;background-color: #1F89FF;float: left;margin-right: 0.3rem;border-radius: 0.2rem}
.sitemap{
    overflow: hidden;
    padding-top: 4%;
}
.sitemap a{
    width: 48%;
    height: 0.6rem;
    text-align: center;
    border: 1px solid #E5E5E5;
    display: block;
    color: #000;
    line-height: 0.6rem;
    float: left;
    margin-right: 4%;
    margin-bottom: 4%;
    border-radius: 0.3rem;
}
.sitemap a:nth-child(2n){
    margin-right: 0;
}