footer {
    background-color: #111;
    padding: 5px;
    font-family: Arial, sans-serif;
    font-size: 14px;
    color: #666;
    text-align: center;
    position: fixed;
    left: 0;
    bottom: 0;
    width: 100%;
    display: block;
    height: 60px;
}

footer p {
    font-size: 14px;
    color: #777;
    text-align: center;
}

footer a {
    color: #999;
    /* 颜色 */
    text-decoration: none;
    /* 不要下划线 */
}

footer a:hover {
    color: #666;
    /* 鼠标悬停颜色 */
}

.footer-top {
    margin-bottom: 60px;
}