#erweima{
    width: 120px;
    height: 170px;
    border:1px solid #eee; 
    position: fixed;
    z-index: 999; 
    left: 0px;
    bottom: 40px;
    overflow: hidden;
    background-color: #fff;
    text-align: center;
}
#erweima p{
    font-size: 14px;
}
#erweima img{
    width: 120px;
    height: 120px;
}