.server-btn{
    width: 60px;
    height: 181px;
    background: url(../../image/020_contact.png) center no-repeat;
}
.up-to-top{
    width: 62px;
    height: 62px;
    background: url(../../image/021_top.png) center no-repeat;
}
.side-bar{
    top: 65%;
    left: 50%;
    margin-left: 700px;
}

.side-en {
    margin-top: 8px;
    margin-left: 1px;
    width: 58px;
    height: 58px;
    background: #fff;
    text-align: center;
    line-height: 58px;
    box-shadow: inset 0 0 3px 0 #c7c7c7;
    border-radius: 2px;
}

.side-en a {
    display: block;
    width: 58px;
    height: 58px;
}