css image horizontal centering
Use margin: 0 auto to achieve image centering is to add css style margin: 0 auto to the image as follows:
<p style="text-align: center; width: 500px; border: green solid 1px;"> <img alt="" src="jgylogo3.gif" style="margin: 0 auto;" /> </p>
Use the horizontal centering attribute of text text- align: center
<p style="text-align: center; width: 500px; border: green solid 1px;"> <img alt="" src="jgylogo3.gif" style="display: inline-block;" /> </p>
css image vertical centering
Use height == row height to achieve vertical centering of the image
This method can only be used if you know the height. The code is as follows:
<p style="text-align: center; width: 500px;height:200px; line-height:200px; border: green solid 1px;"> <img alt="" src="jgylogo3.gif" style="display: inline-block; vertical-align: middle;" /> </p>
Use table to achieve vertical centering of images
The method of using table is to use the vertical centering attribute of table. The code is as follows:
Here we use display: table; and display: table-cell; to simulate table. This method is not compatible with IE6/IE7. IE67 does not support display: table. If you do not need to support IE67, you can use
Disadvantages: When you set display: table ; May change your original layout
<p style="text-align: center; width: 500px;height:200px; display: table;border: green solid 1px;"> <span style="display: table-cell; vertical-align: middle; "> <img alt="" src="jgylogo3.gif" style="display: inline-block;" /> </span> </p>
Use absolute positioning to vertically center the image
If the width and height of the image are known, the code is as follows:
<p style="width: 500px;height:200px; position: relative; border: green solid 1px;"> <img alt="" src="jgylogo3.gif" style="width: 120px; height: 40px;position: absolute; left:50%; top: 50%; margin-left: -60px;margin-top: -20px;" /> </p>
The mobile terminal can use flex layout to achieve vertical centering of CSS images.
The mobile terminal generally has a higher browser version, so you can boldly use flex layout. (For flex layout, refer to the flex layout usage of css3) The demonstration code is as follows:
css代码: <style type="text/css"> .ui-flex { display: -webkit-box !important; display: -webkit-flex !important; display: -ms-flexbox !important; display: flex !important; -webkit-flex-wrap: wrap; -ms-flex-wrap: wrap; flex-wrap: wrap } .ui-flex, .ui-flex *, .ui-flex :after, .ui-flex :before { box-sizing: border-box } .ui-flex.justify-center { -webkit-box-pack: center; -webkit-justify-content: center; -ms-flex-pack: center; justify-content: center } .ui-flex.center { -webkit-box-pack: center; -webkit-justify-content: center; -ms-flex-pack: center; justify-content: center; -webkit-box-align: center; -webkit-align-items: center; -ms-flex-align: center; align-items: center } </style> html代码: <p class="ui-flex justify-center center" style="border: green solid 1px; width: 500px; height: 200px;"> <p class="cell"> <img alt="" src="jgylogo3.gif" style="" /> </p> </p>
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