body {
    margin-top:1em;
    margin-bottom: auto;
    font-family:Arial, sans-serif
}

h1 {
    text-align: center;
    font-size: 2em;
}

h2 {
    text-align: center;
    font-size: 2em;
}

nav {
    text-align: center;
    font-size: 1em;
}

p, div {
    margin: 10px;
    padding: 20px;
    line-height: 1em;
}

tfoot td {
    font-size:10px;
    font-style: italic;
    text-align: center;
}

tr:nth-of-type(even) {
    background-color: #eaeaea;
}

thead:first-of-type {
    background-color:#3f2a14;
    color:#FFF
}

/* ID
*/
<id="validation">
text-align: center;