having a real problem with $section_width - which is preventing fluid layouts.

I don't see an easy way a fixed width can work - either as percentage or a pixel width.
I think the right way to do this is probably to set a right-margin - which will let the
width float within the constraints of the viewport but should achieve the same result.

view/theme/redbasic/css/style.css

@@ -129,8 +129,10 @@ nav {
 
 }
 
+/*
 section {width: $section_width;
 }
+*/
 
 nav:hover {
 	background-image: linear-gradient(bottom, $nav_bg_3 26%, $nav_bg_4 82%);