.main-im{
    position: fixed;
    right: 10px;
    top: 300px;
    z-index: 100;
    width: 70px;
    height: 80px;
    background-color: #1c51bc;
    padding: 10px;
    border-radius: 10px;
    text-align: center;
    font-size: 12px;
    color: #ffffff;
}
.img-qq{
    width: 30px;
    height: 30px;
    margin: 0 auto;
    display: block;
    margin-bottom: 10px;
}
.open-im a:hover{
    color: #ffffff;
}