*{ margin:0px; padding:0px;}
body 
{
    line-height:1.5;
    font-family:微软雅黑;
}
a{ text-decoration:none;}
ul,li{ list-style:none; }


#topcontrol {
    z-index: 9999;
}
#topcontrol .gotop
{
    transition-duration: .2s;
    text-align: center;
    cursor: pointer;
    background: #FFFFFF;
    width: 50px;
    padding: 15px 0px;
    border-radius: 3px;
    box-shadow: 0 2px 18px rgba(0,0,0,.1);
}
#topcontrol .gotop img{ vertical-align:middle; }