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<!DOCTYPE html> <html> <head> <style> li:first-child { background: yellow; } </style> </head> <body> <ul> <li>Coffee</li> <li>Tea</li> <li>Coca Cola</li> </ul> <ol> <li>Coffee</li> <li>Tea</li> <li>Coca Cola</li> </ol> <p><b>Note:</b> For :first-child to work in IE8 and earlier, a DOCTYPE must be declared.</p> </body> </html>