* {
    margin: 0;
    padding: 0;
}
a {
    text-decoration: none;
    color: #222;
    outline: none;
}
ul, li, ol {
    list-style: none;
}
header, nav, article, footer, address, section {
    display: block;
}
footer>div {
    height: 80px;
    line-height: 80px;
    position: relative;
}