W3School TIY
编辑您的代码：
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <style type="text/css"> p > em:first-child { font-weight:bold } </style> </head> <body> <p>I am a <em>strong</em> man. I am a <em>strong</em> man.</p> <p>I am a <em>strong</em> man. I am a <em>strong</em> man.</p> </body> </html>
查看结果: