<style>body{ width:90%; margin:0 auto} #content{ overflow:auto; height:100%;} #nav,#feature,#footer{ background-color:#efefef; margin:1%;} .col1,.col2,.col3{ background-color:#efefef; width:31.3%px; float:left; margin:1%;} li{ display:inline; padding:0.5em;} #nav,#footer{ background-color:#efefef; padding:0.5em 0;} #feature,.article{ height:10em; margin-bottom:1em; background-color:#efefef;}</style> <body><div id="header"><h1>Logo</h1><div id="nav"><ul><li>A</li><li>B</li><li>C</li><li>D</li><li>E</li></ul></div></div><div id="content"><div id="feature"><p>feature</p></div><div class="article col1"><p>col one</p><div class="aritcle_card flexRow">
<div class="artcardd flexRow">
<a class="aritcle_card_img" href="/ai/1270" title="Magic AI Avatars"><img
src="https://img.php.cn/upload/ai_manual/001/431/639/68b6db28b2e74845.png" alt="Magic AI Avatars" onerror="this.onerror='';this.src='/static/lhimages/moren/morentu.png'" ></a>
<div class="aritcle_card_info flexColumn">
<a href="/ai/1270" title="Magic AI Avatars">Magic AI Avatars</a>
<p>神奇的AI头像，获得200多个由AI制作的自定义头像。</p>
</div>
<a href="/ai/1270" title="Magic AI Avatars" class="aritcle_card_btn flexRow flexcenter"><b></b><span>下载</span> </a>
</div>
</div></div><div class="article col2"><p>col two</p></div><div class="article col3"><p>col three</p></div></div><div id="footer"><p>Copynight 2011</p><p><span>立即学习</span>“<a href="https://pan.quark.cn/s/cb6835dc7db1" style="text-decoration: underline !important; color: blue; font-weight: bolder;" rel="nofollow" target="_blank">前端免费学习笔记（深入）</a>”；</p></div></body> 为什么小弟做出的版面这样...
而不是这样子呢？宽度应该没设定错呀...
回复讨论(解决方案)
.col1,.col2,.col3{ background-color:#efefef; width:31.3%px; float:left; margin:1%;} 这里的宽度单位？想用百分比还是想用像素？
文字居中显示的话，可以再body中添加一个text-align:center;
也可以在每一个div元素中添加，这个属性会被所有的后代元素继承的。
?於 div class "article col1"和div class "col1" 差?在哪?... 因?小弟是??自?有些不懂得地方
?什?要?上要用div class "article col1" 意?差在哪?
<div class="article col1"><p>col one</p></div><div class="article col2"><p>col two</p></div><div class="article col3"><p>col three</p></div>
?於 div class "article col1"和div class "col1" 差?在哪?... 因?小弟是??自?有些不懂得地方
?什?要?上要用div class "article col1" 意?差在哪?
<div class="article col1"><p>col one</p></div><div class="article col2"><p>col two</p></div><div class="article col3"><p>col three</p></div>
有没有高手能回答
网上查都查不到类似的
都只看见的
class“ ”里面不是类别的名字吗......那“”里面的文章功用何在？
小弟懂了 ??!!
