#nav .mainnav .mainnav_box ul li .mainnav_title .pic {
    margin-right: 5px !important;
}
#ac {
    position: absolute;
    z-index: 9999;
    background: #fff;
    border: 1px solid #ddd;
    width: 145px;
}

#ac ul li {
    height: 30px;
    line-height: 30px;
    cursor: pointer;
}

#ac ul li:hover {
    background: #ddd;
}

#ac ul li em {
    font-style: normal;
    font-weight: bold;
}