html {
    position: relative;
    min-height: 100%;
}

body {
    margin-bottom: 30px; /* 页脚的高度 */
}

.main-content {
}

footer {
    position: absolute;
    bottom: 0;
    width: 100%;
    text-align: center;

}
footer .copyright {
    font-size: 12px;
    color: #9ca3af;
}

footer p a {
    padding-left: 10px;
    font-size: 12px;
    color: #9ca3af;
    text-decoration: none;
}