*
{
    margins: auto;
    padding: 0%;
    font-size: 100%
}

#mainDiv {
    position: absolute;
    width: 66%;
    height: 50%;
    min-width: 600px;
    top: 15%;
    left: 16%;
    background-color: #eee;
    border: solid #000000;
    text-align: center;
}