2012年8月27日
摘要:
1、Child Selectors.what is a child, what is a parent? for example , <body> is child of <html>, <html> is parent of <body>例:<html>
<head> <style type="text/css"> p > a{ color:red; font-size:30px; } </style>
</head> <body> <a h 阅读全文