html,
body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    width: 100%;
    height: 100%;
    background: #000;
    font-family: Arial, Helvetica, sans-serif;
}

h1 {
    position: absolute;
    z-index: 999;
    top: 20px;
    width: 100%;
    text-align: center;
    color: white;
    font-size: 24px;
    margin: 0;
}