.my_content {
    height: 100px;
    line-height: 100px;
    text-align: center;
}

.my_footer .bei_an {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
.my_footer img {
    height: 20px;
    float: left;
}
.my_footer a:link,a:visited {
    color: black;
    text-decoration: none;
}
.my_footer a:hover {
    color: blue;
    text-decoration: underline;
}

.my_footer a{
    height: 20px;
    line-height: 20px;
    font-size: 15px;
    float: left;
}