Question

Normally, you center images with display: block; margin: auto, but if the image is larger than the container, it overflows to the right. How do I make it overflow to the both sides equally? The width of the container is fixed and known. The width of the image is unknown.

Answer 1

HTML

​<div class="image-container">
  <img src="http://www.google.com/images/logo.gif" height="100" />
</div>​

CSS

.image-container {
    width: 150px;
    border: solid 1px red;
    margin:100px;
}

.image-container img {
    border: solid 1px green;
}

jQuery

$(".image-container>img").each(function(i, img) {
    $(img).css({
        position: "relative",
        left: ($(img).parent().width() - $(img).width()) / 2
    });
});

​

See it on jsFiddle: http://jsfiddle.net/4eYX9/30/