Internet Explorer is a very popular browser, but can often cause headaches for template designers due to its prevalence with the commonly used float-based layouts. A common bug is known as the "double-margin" bug.
We can use conditional comments to create a stylesheet that affects Internet Explorer only by linking a stylesheet within a conditional comment in the<head> element of your template's index.php file:
<!--[if lte IE 7]> <link href="<?php echo $this->baseurl ?>/templates/<?php echo $this->template ?>/css/ieonly.css" rel="stylesheet" type="text/css" /> <![endif]-->
As these bugs affect versions 7 and earlier of Internet Explorer, you can safely target those of the browser only. You need to add this new style into the ieonly.css file in your template's \css directory.