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7月3号作业
坏人也温柔de陈词滥调
Original
531 people have browsed it
实例
<!DOCTYPE html>
<html lang="en">
<head>
   <meta charset="UTF-8">
   <title>天上天下 </title>
   <!--    这是style标签-->
   <style>
       p{color:red}
       .yellow{color:yellow}
       #pink{color:pink}
   </style>
</head>
<body>
<!--style属性-->
<p style="color:blue">准确把握中美关系的根本性问题</p>
<p class="yellow">才能为两国关系未来发展定向把舵</p>
<p id="pink">在刚结束的二十国集团大阪峰会上</p>
<p>中美两国元首达成共识</p>
<h2>后台管理</h2>
<ul style="float: left">
   <li><a href="demo3.html" target="main">用户管理</a> </li>
   <li><a href="demo4.html" target="main">分类管理</a> </li>
   <li><a href="demo5.html" target="main">商品管理</a> </li>
   <li><a href="demo6.html" target="main">系统设置</a> </li>
</ul>
<iframe srcdoc="<h3>网站管理后台<h3>" frameborder=""name="main" width="500" height="800" style="float:left;
margin-left:20px"></iframe>
</body>
</html>


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盒模型:

盒模型的内外边距只有宽度,没有颜色,默认是透明的。

盒模型外边距叫margin,内边距叫padding,边框叫border,他们是以顺时针方向排列的,分别是:

margin-top  margin-right  margin-bottom  margin-left;

padding-top  padding-right  padding-bottom  padding-left;

border-top  border-right  border-bottom  border-left



Correction status:qualified

Teacher's comments:
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