.top_search_banner {
    box-sizing: border-box;
    position: fixed;
    top: 0;
    width: 100%;
    height: 55px;
    z-index: 500;
    border-bottom: 1px solid #DEDEDE;
    display: -webkit-flex;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 15px;
    background: #f2f2f2;
}
.top_search_banner .back_btn {
    padding-left: 15px;
    font-size: 14px;
    color: #1b1b1f;
    background: url(../img/return.png) no-repeat 0 center;
    background-size: 9px;
}.logo_wrap {
    width: 55%;
    text-align: center;
    font-size: 0;
}a {
    text-decoration: none;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}a img, li img {
    display: block;
    width: 100%;
}.top_menu_box {
    margin-top: 4px;
}.menu_icon {
    display: block;
    width: 18px;
    height: 18px;
    background: url(../img/xuangou_icon.png) no-repeat;
    background-size: 75px;
}.weui_top_tabbar {
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    position: absolute;
    z-index: 500;
    left: 0;
    top: 55px;
    width: 100%;
    height: 0;
    overflow: hidden;
    background-color: rgba(0,0,0,0.7);
}.weui-tabbar__item {
    display: block;
    -webkit-box-flex: 1;
    -webkit-flex: 1;
    flex: 1;
    padding: 5px 0 0;
    font-size: 0;
    color: #808080;
    text-align: center;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
} 
.weui_top_tabbar_icon {
    margin: 0 auto;
    width: 24px;
    height: 24px;
    background: url(../img/top_menu_icon.png) no-repeat;
    background-size: 180px;
}.weui_top_tabbar .home_icon {
    background-position: 0 0;
}.weui_top_tabbar_label {
    padding-bottom: 3px;
    text-align: center;
    color: #fff;
    font-size: 12px;margin-top: -10px;
}.weui_top_tabbar .category_icon {
    background-position: -40px 0;
}.weui_top_tabbar .xuangou_icon {
    background-position: -80px 0;
}.weui_top_tabbar .cart_icon {
    background-position: -120px 0;
}.weui_top_tabbar .person_icon {
    background-position: -160px 0;
}