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Tryit: 使用 position: fixed
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<!DOCTYPE html> <html> <head> <style> div.fixed { position: fixed; bottom: 0; right: 0; width: 300px; border: 3px solid #73AD21; } </style> </head> <body> <h2>position: fixed;</h2> <p>An element with position: fixed; is positioned relative to the viewport, which means it always stays in the same place even if the page is scrolled:</p> <div class="fixed"> This div element has position: fixed; </div> </body> </html>
