#sign-in-youtube {
    margin: auto 0;
    margin-bottom: 20px;
    text-align: center;
    padding: 12px;
    overflow: hidden;
    background: #fff;
    border: 1px solid #c3c4c7;
    box-shadow: 0 1px 3px rgba(0,0,0,.04);
}

#youtube-icon {
    height: 1.5rem;
    vertical-align: middle;
    margin-right: 0.5rem;
}