html,
body {
    background-color: #28a3d7;
}

#logo {
    width: 420px;
    /* max-width: 80%; */
    margin: 0;
    position: absolute;
    top: 50%;
    left: 50%;
    -ms-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
}