html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    background: #eee;
}

#notice {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #1e2432;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;

}