auto; } /* Large monitors */ @media screen and (min-width: 1600px) { div.content { width: 1440px; } } ... /* Tablets in portrait */ @media screen and (min-width: 761px) and (max-width: 990px) { div.content { width: 740px; } } /* Mobile */ @media screen and (max-width: 760px) { div.content { width: 100%; } }