body
{
    background: #FFFFFF none repeat scroll 0%;
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 16px;
    font-size: 3.5vw;
}

div#container
{
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    font-size: clamp(16px, 3.5vw, 48px);
    text-align: center;
}