header {
    font-family: "Roboto", "Helvetica", "Arial", sans-serif;
    border-bottom: 1px solid #DDD;
    padding-bottom: 10px;
    margin-bottom: 20px;
    text-align: center;
    font-size: 0.55em;
    color: #555
}

header img {
    margin-bottom: 10px;
    width: 350px
}