* { margin: 0; padding: 0; box-sizing: border-box; } .page-header { display: flex; justify-content: center; padding: 28px 0; background: #000000; } .header-logo { display: block; } .main-banner { width: 100%; } @media screen and (max-width: 414px) { .main-banner-desktop { display: none; } } @media screen and (min-width:415px) { .main-banner-mobile { display: none; } }