body {
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}
#background {
    background-image: url(MyFirstPainting.jpg);
    height: 100vh;
    width: 100%;
    background-size: cover;
    background-position: center center;
    position: fixed;
    top: 0;
    z-index: -1;
}

h1 {
    text-align: center;
    color: white;
    background: rgb(0,0,0,0.314);
}