专注前端素材！
源代码：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>素材8网教程(study.sucai8.cn)</title> <style> [title=runoob] { border:5px solid green; } </style> </head> <body> <h2>将适用:</h2> <img title="runoob" src="/images/logo.png" width="270" height="50" /> <br> <a title="runoob" href="http://www.sucai8.cn/">htmlsucai</a> <hr> <h2>将不适用:</h2> <p title="greeting">Hi!</p> <a class="runoob" href="http://www.sucai8.cn/">htmlsucai</a> </body> </html>
运行结果