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<!DOCTYPE html> <html> <head> <style> textarea { width: 100%; height: 150px; padding: 12px 20px; box-sizing: border-box; border: 2px solid #ccc; border-radius: 4px; background-color: #f8f8f8; font-size: 16px; resize: none; } </style> </head> <body> <p><strong>提示：</strong>使用 resize 属性防止调整文本区域的大小（禁用右下角的“grabber”）：</p> <form> <textarea>Some text...</textarea> </form> </body> </html>