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<!DOCTYPE html> <html> <head> <style> p.ex1 { margin: 35px 70px 50px; } </style> </head> <body> <h1>margin 属性</h1> <p>没有指定边距的段落。</p> <p class="ex1">本段顶部有 35 像素的边距，左右各有 70 像素的边距，底部有 50 像素的边距。</p> <p>没有指定边距的段落。</p> </body> </html>