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Css tutorial: How to center DIV vertically

Source: Internet
Author: User
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[Document of the institute of fire website construction] Today, the website has been improved and finally found a solution to vertical center DIV.

<! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<Html xmlns = "http://www.w3.org/1999/xhtml">
<Head>
<Meta http-equiv = "Content-Type" content = "text/html; charset = UTF-8"/>
<Title> CSS layout skills: vertical center of div with unknown height-fire jianting college </title>
<Style type = "text/css">
Html, body
{
Height: 100%;
Padding: 0;
Margin: 0;
}
Body
{
Min-height: 200px;
Text-align: center;
Min-width: 402px
}
. FirstDIV
{
Margin-top:-100px;/* Half of SecondDIV height */
Float: left;
Width: 100%;
Height: 50%;
}
. SecondDIV
{
Clear: both;
Border: silver 1px solid;
Background: # ccc;
Margin-left: auto;
Overflow: auto;
Width: 400px;
Margin-right: auto;
Height: 200px;
Text-align: left
}
</Style>
</Head>
<Body>
<Div class = "FirstDIV"> </div>
<Div class = "SecondDIV">
<P> look, this is not centered. Haha. And there is no problem. Www.bkjia.com </p>
<P> body {background-color: # FFF5F0} <br>
Div {position: absolute; top: 50%; left: 50%; margin:-100px 0 0-200px;
Width: 400px; height: 200px; border: 1px # CCCC00 solid; font-family: Arial,
Helvetica, sans-serif; color: #666666} </p>
</Div>
</Body>
</Html>

 

<! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN "" http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd "> <Html xmlns =" http://www.w3.org/1999/xhtml "> <Head> <meta http-equiv =" Content-Type "content =" text/html; charset = UTF-8 "/> <title> CSS layout skills: unknown height div vertical center problem-fire station building school </title> <style type = "text/css"> html, body {height: 100%; padding: 0; margin: 0 ;}body {min-height: 200px; text-align: center; min-width: 402px }. firstDIV {margin-top:-100px;/* Half of SecondDIV height */float: left; width: 100%; height: 50% ;}. secondDIV {clear: both; border: silver 1px solid; background: # ccc; Margin-left: auto; overflow: auto; width: 400px; margin-right: auto; height: 200px; text-align: left }</style> 


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