51help TIY
码：
<!DOCTYPE html> <html> <head> <style> div { appearance:button; -moz-appearance:button; /* Firefox */ -webkit-appearance:button; /* Safari and Chrome */ } </style> </head> <body> <p><b>注释：</b>Internet Explorer 和 Opera 不支持 appearance 属性。</p> <div></div> </body> </html>
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