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<html><head><meta name="viewport" content="width=device-width, initial-scale=1"><style>.container { background-color: red; position: relative; width: 100%; padding-top: 66.66%; /* 3:2 Aspect Ratio */}.text { position: absolute; top: 0; left: 0; bottom: 0; right: 0; text-align: center; font-size: 20px; color: white;}</style></head><body><h2>Maintain Aspect Ratio 3:2</h2><p>Resize the window to see the effect.</p><div class="container"> <div class="text">3:2 Aspect ratio</div> </div></body></html>