6 ways to center CSS vertically_html/css_WEB-ITnose

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Using CSS to horizontally center elements is relatively simple. Row-level elements set the text-align center of their parent elements, and block-level elements set their own left and right. Just set margins to auto. This article collects six methods for vertically centering elements using CSS. Each method is suitable for different situations. Just choose a certain method in the actual use process.

Line-Height Method

Trial: Single line text vertically centered, demo

Code:

html

123	<div id="parent"> <div id="child">Text here</div> </div>

css

123	#child { line-height: 200px; }

Vertically center an image, the code is as follows

html

123	<div id="parent"> <img src="image.png" alt="" /> </div>

css

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#parent { line-height: 200px; } #parent img { vertical-align: middle; }

CSS Table Method

Applicable: Universal, demo

Code:

html

123	<div id="parent"> <div id="child">Content here</div> </div>

css

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#parent {display: table;} #child { display: table-cell; vertical-align: middle; }

Lower versions of IE fix bug:

123	#child { display: inline-block; }

Absolute Positioning and Negative Margin

Applicable to: block-level elements, demo

Code:

html

123	<div id="parent"> <div id="child">Content here</div> </div>

css

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#parent {position: relative;} #child { position: absolute; top: 50%; left: 50%; height: 30%; width: 50%; margin: -15% 0 0 -25%; }

Absolute Positioning and Stretching

Applicable: Universal , but it does not work properly when IE version is lower than 7, demo

code:

html

123	<div id="parent"> <div id="child">Content here</div> </div>

css

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#parent {position: relative;} #child { position: absolute; top: 0; bottom: 0; left: 0; right: 0; width: 50%; height: 30%; margin: auto; }

Equal Top and Bottom Padding

Applicable: Universal, demo

Code:

html

123	<div id="parent"> <div id="child">Content here</div> </div>

css

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#parent { padding: 5% 0; } #child { padding: 10% 0; }

Floater Div

Applicable: universal, demo

Code:

html

1234	<div id="parent"> <div id="floater"></div> <div id="child">Content here</div> </div>

css

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#parent {height: 250px;} #floater { float: left; height: 50%; width: 100%; margin-bottom: -50px; } #child { clear: both; height: 100px; }

The above are the six methods, which can be chosen reasonably during actual use. Please refer to the article "vertical-centering".