@media only screen and (min-width: 992px) { #page-main-content { margin-left: auto; margin-right: auto; float: none; width: 85%; } } @media only screen and (max-width: 680px) and (min-width: 501px) { #affiche { max-width: 50%; } } @media only screen and (max-width: 500px) { #affiche { max-width: 45%; } } #register { font-weight: 700; color: royalblue; } #register:hover { font-weight: 700; color: #4c9d65; }