html, body {
    background: #FFFFF0;
    height: 100%;
    margin: 0px;
    text-align: center;
}

#container {
    background: #FFFFF0;
    width: 50%;
    height: 50%;
    position: absolute;
    left: 25%;
    top: 25%;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
}