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<!DOCTYPE html> <html> <head> <style> div { background-color: lightgreen; inline-size: 70%; padding: 30px 10px; border-inline-start-style: solid; border-inline-start-width: 10px; } </style> </head> <body> <h2>border-inline-start-width: 10px:</h2> <div> <p>border-inline-start-width 属性定义行内方向开始处边框的宽度。</p> </div> </body> </html>