Webcam Zinnowitz #outer { width: auto; margin: 0 auto; background: #5C7591; padding: 5px; } .size { display: none; } @media (min-width: 1121px) { .responsive-iframe { width: 885px; height: 492px; } .largesize { display: block; } } @media (max-width: 1120px) { .responsive-iframe { width: 414px; height: 230px; } .mediumsize { display: block; } }