This code:

Code:
 
<base href="[var.base_url]/">
<link href="[var.base_url]/themes/default/css/main.css" rel="stylesheet" type="text/css" media="all" />
And this code:

Code:
 
<base href="[var.base_url]/">
<link href="../themes/default/css/main.css" rel="stylesheet" type="text/css" media="all" />
show the page differently. Why? Aren't they pointing to the same css file?