h1 {
    text-align: center;
}

main {
    margin: 80px 0 0;
}
div#contact {
    height: auto;
    min-height: calc(100vh - 80px);
}

div.contact {
    display: block;
}
div.contact textarea,
div.contact input[type="text"], 
div.contact input[type="email"] {
    width: 100%;
}