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<article>
<h1>W3C</h1>
<p>万维网</p>
<section>
<h2>css</h2>
<p>cssa</p>
</section>
<section>
<h2>html</h2>
<p>htmla</p>
</section>
</article>
<section>
<h1>W3C</h1>
<p>万维网</p>
</section>
H1字体的大小比h2的字体的大小 小body,ul,li,p,h1,h2,h3,h4,h5,h6,img,br,hr,table,tr,td,dl,dt,dd,form {
margin: 0;
padding: 0;
}
body {
font-family: Arial,"微软雅黑";
font-size: 12px;
color: #434343;
}
.clear {
clear: both;
font-size: 0px;
}
ul,li {
list-style: none;
}
img {
border: none;
}
/*一般链接*/
a {
text-decoration: none;
color: #555;
}
a: hover {
color: #3366ff;
}