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CSS margin-bottom 属性
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<!DOCTYPE html> <html> <head> <style> p.ex1 { margin-bottom: 25px; } </style> </head> <body> <h1>The margin-bottom Property</h1> <p>A paragraph with no margins specified.</p> <p class="ex1">A paragraph with a 25 pixels bottom margin.</p> <p>A paragraph with no margins specified.</p> </body> </html>