.square{width:600px;height:600px}.horizontal3-2{width:800px;height:533.3px}.horizontal4-3{width:800px;height:600px}.horizontal16-9{width:800px;height:450px}.horizontal2-1{width:800px;height:400px}.vertical2-3{width:600px;height:900px}.vertical3-4{width:600px;height:800px}.vertical9-16{width:600px;height:1066.6px}.vertical1-2{width:600px;height:1200px}