.footer {
    font: 12px/30px "微软雅黑";
    color: #fff;
    width: 100%;
    padding: 20px 0 20px;
    background: #333;
    text-align: center;
}
.footer a {
    color: #fff;
}
.footer a:hover {
    text-decoration: underline;
}
@media (max-width: 750px) {
    .footer {
        display: none;
    }
}