I have made a new CSS file for the R offline documentation. It's far easier to read, it's lightweight, looks good, cross-browsers, responsive, and without any bug. Now my problem is where should I post it so it can be used in the next version ? And it's not an easy problem... Any ideas? The file is here : www.nicolasdrouin.com/R.css There is no need to change the HTML part just to switch the old CSS files with this new one.