@viewport { min-width: 640px; max-width: 800px; } @viewport { min-width: 640px; max-width: 800px; } @viewport { min-width: 640px; max-width: 800px; } @viewport { min-width: 640px; max-width: 800px; } @viewport { min-width: 640px; max-width: 800px; } @viewport { min-width: 640px; max-width: 800px; }