abstract：<!DOCTYPE html><html> <head> <title>style_demo</title> <meta charset="UTF-8"> &nb
<!DOCTYPE html>
<html>
<head>
<title>style_demo</title>
<meta charset="UTF-8">
<!-- 样式 -->
<style type="text/css" media="screen">
h1 {color:yellow}
h2 {color:black}
p {color:red}
</style>
</head>
<body>
<h1>style_demo</h1>
<h3>颜色
<p id="color1">color1</p>
<p id="color2">color2</p>
</h2>
</body>
</html>
Correcting teacher：灭绝师太Correction time：2019-03-21 10:29:26
Teacher's summary：边框后期布局用的非常多哦,作业要练习本节课知识点!