body { background-color: rgb(0, 4, 9); background-image: url("ciel-etoile.png"); background-repeat: repeat; color: white; } body > header a, body > header a:visited { color: white; } @media screen and (max-width: 35.374rem) { body > header nav { text-align: left; } body > header nav ul li { margin-left: 1rem; } } @media screen and (min-width: 35.375rem) { body > header nav a, body > header nav a:visited { background-color: white; color: rgb(0, 4, 9); border-radius: 50%; padding: 0.5rem 1rem; box-shadow: 0 0 0.5rem white; } body > header nav { overflow: visible; } }