body {
    background-image: url(blackbackground.jpg);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    height: 100vh;
    margin: 0;
}

h1 {
    text-align: center;
    border: 5px solid rgb(120, 22, 129);
    border-radius: 11px;
    border-style: ridge;
    background-color: blanchedalmond;
}