body .first-background {
    margin: 0;
    height: 100vh;
    background-image: url('sj bg.png'); 
    background-size: cover;
    background-position: center;
    background-attachment: fixed; /* Fixed background */
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff; /* Set text color to be visible on the background */
    font-size: 24px;
}