body, html {
    margin: 0;
    padding: 0;
   
    font-family: Arial, sans-serif;
}

@media (max-width: 768px) {
    body {
        background-image: url('hic1.jpg');
       background-attachment: fixed;
        background-size: cover;
       /* background-size: contain; */
        background-position: center; 
        background-repeat: no-repeat;
    }
}

@media (min-width: 769px) {
    body {
        background-image: url('hic2.jpg');
        background-position: center; 
        background-size: cover;  
        background-repeat: no-repeat; 
        background-attachment: fixed;
}