body{
    background-image: url(../images/manifesto-jeans-mobile-2.webp);
    background-repeat: no-repeat;
    background-position: center center;
    background-size: cover;
    height: 100vh;
}
@media screen and (min-width: 600px){
    body{
        background-image: url(../images/manifesto-jeans-desktop.webp);
        background-repeat: no-repeat;
        background-position: center center;
        background-size: cover;
        height: 100vh;
    }
}