breaking down the main page into subpages for easier, more comprehensive documentation

lib/mixins.less

@@ -162,12 +162,19 @@
 }
 
 // Background clipping
+// Heads up: FF 3.6 and under need padding instead of padding-box
 .background-clip(@clip) {
   -webkit-background-clip: @clip;
      -moz-background-clip: @clip;
           background-clip: @clip;
 }
 
+// Resize anything
+.resizable(@direction: both) {
+  resize: @direction; // Options: horizontal, vertical, both
+  overflow: auto; // Safari fix
+}
+
 // CSS3 Content Columns
 .content-columns(@columnCount, @columnGap: 20px) {
   -webkit-column-count: @columnCount;