.top_shade {
    position: fixed;
    width: 100%;
    max-width: 7.5rem;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 99999;
    top: 0.84rem;
    display: none;
    bottom: 0;
}

.top_content {
    max-width: 7.5rem;
    width: 100%;
    position: fixed;
    padding: 0.2rem 5%;
    background: #fff;
    top: 0.84rem;
    z-index: 999999;
}

    .top_content a {
        display: inline-block;
        width: 25%;
        float: left;
        box-sizing: border-box;
        padding: 0.28rem 0;
        text-align: center;
        font-size: 0.28rem;
    }

        .top_content a span {
            display: block;
            text-align: center;
            height: 0.64rem;
        }

.icon_top_home {
    background: url(../image/top_home.png) no-repeat;
    background-size: 100% 100%;
}

.foot_icon {
    display: inline-block;
    width: 2em;
    height: 2em;
}

.icon_top_yd {
    background: url(../image/top_yd.png) no-repeat;
    background-size: 100% 100%;
}

.icon_top_lt {
    background: url(../image/top_lt.png) no-repeat;
    background-size: 100% 100%;
}

.icon_top_zx {
    background: url(../image/top_zx.png) no-repeat;
    background-size: 100% 100%;
}