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Why can't I use the p tag to set the center?_html/css_WEB-ITnose

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Release： 2016-06-24 12:14:14
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The #page I set {width:500px;height:30px;margin:0 auto;}
In IE it is centered, but in Firefox it is not centered ,
Later, I changed

to

or
    and it became centered. I don’t know why?

    is also a block element,



    Reply to the discussion (solution)
    For p, use


    You can use firebug to track it under ff, and the generated document The tree has changed 

     text-align : center
    Copy after login


    p can only contain inline elements, not block elements 

    <p id="page">   <form>       <input type="text" name="text">   </form></p>被解析成为 以下文档树了，自然不起作用了<p id="page"></p>     <form>      <input name="text" type="text">    </form><p></p>
    Copy after login
    There are rules for nesting elements, not how you want to nest them

    The DOCTYPE definition is missing

    Thanks to 2nd floor, I understand

    o, bd

    Try not to use blocks in P tags!

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为什么用p 标签设置居中不行?
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