If you write styles specifically for IE, itβs best not to combine them all together. So I would have a main manifest file where I would upload all my common style sheet files together and manifest 1/2/3 for IE (s) using conditional comments (http: //www.quirksmode. Org / css / condcom .html):
<%= stylesheet_link_tag :application %> // main manifest
thus, I would be sure that the css loading performance would not be damaged in browsers other than IE, and that my IE style sheets would not be loaded for different versions, (IE6 fixes in IE7, p.ex.).
source share