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<!DOCTYPE html> <html> <head> <style> p { margin: 30px; background:yellow; border: 1px solid black; outline: 1px solid red; outline-offset: 15px; } </style> </head> <body> <h2>outline-offset 属性</h2> <p>此段在边框边缘外有 15px 的轮廓。</p> </body> </html>