Question

How do I center an <img> in a containing <div>?

The usual margin-left: auto; margin-right: auto; isn’t working.

The image can be larger than the container, and is scaled either horizontally or vertically by the max-width and max-height.

A jsfiddle with the below code: http://jsfiddle.net/9ShGj/1/

HTML:

<div class="container">
   <img src="http://www.yensa.com/fat/fat-dude10.jpg" />
</div>
<div class="container">
   <img src="http://oi43.tinypic.com/bje2wn.jpg" />
</div>

CSS:

.container {
 width: 200px;
 height: 200px;
 background: rgb(120, 120, 120);
 border: 1px solid red;
 margin: 5px;
}

.container img {
 max-width: 200px;
 max-height: 200px;
 margin-left: auto;
 margin-right: auto;
 vertical-align: middle;
}

Answer 1

You can write like this:

CSS

div{
    width:200px;
    height:200px;
    border:1px solid red;
    text-align:center;
    line-height:200px;
}

img{
    vertical-align:middle;
}

HTML

<div>
    <img src="http://dummyimage.com/150x150/000/fff&text=dummy" >
</div>

Check this http://jsfiddle.net/dP89y/