<!doctype html> <html> <body> <style> section { height: 200px; outline: 2px solid palegreen; } div { margin: 0 auto; text-align: center; width: 50%; background-color: aqua; padding: 3px; } </style> <section> <div>horiz. center w margins</div> </section>
realtime
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update
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fullscreen
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render
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github