diff --git a/fusion_core/css/grid16-fluid-rtl.css b/fusion_core/css/grid16-fluid-rtl.css
index 8155221..4c3b2ca 100644
--- a/fusion_core/css/grid16-fluid-rtl.css
+++ b/fusion_core/css/grid16-fluid-rtl.css
@@ -17,3 +17,58 @@
 .grid16-indent-13 {margin-right: 81.25%;}
 .grid16-indent-14 {margin-right: 87.5%;}
 .grid16-indent-15 {margin-right: 93.75%;}
+
+
+/* Layout - 16 column grid, fluid width, 20px gutters
+-------------------------------------------------------------- */
+
+/* grid widths */
+.grid16-1 {width: 6.25%;}
+.grid16-2 {width: 12.5%;}
+.grid16-3 {width: 18.75%;}
+.grid16-4 {width: 25%;}
+.grid16-5 {width: 31.25%;}
+.grid16-6 {width: 37.5%;}
+.grid16-7 {width: 43.75%;}
+.grid16-8 {width: 50%;}
+.grid16-9 {width: 56.25%;}
+.grid16-10 {width: 62.5%;}
+.grid16-11 {width: 68.75%;}
+.grid16-12 {width: 75%;}
+.grid16-13 {width: 81.25%;}
+.grid16-14 {width: 87.5%;}
+.grid16-15 {width: 93.75%;}
+.grid16-16 {width: 100%;}
+
+
+/* gutters (2 x margin) */
+.gutter {
+  margin-left: 10px;
+  margin-right: 10px;
+}
+
+/* page min width */
+body,
+div.full-width {
+  min-width: 780px;
+}
+
+/* region max-min width */
+.region {
+  max-width: 1320px;   /* 960px + 360px */
+  min-width: 780px;    /* 960px - 180px */
+}
+
+/* allow nested regions to be smaller */
+.region.nested {
+  min-width: 0;
+}
+
+/* theme setting: set fluid grid width on top-level full-width elements */
+.fluid-100 .full-width .grid16-16 {width: 100%;}
+.fluid-95 .full-width .grid16-16 {width: 95%;}
+.fluid-90 .full-width .grid16-16 {width: 90%;}
+.fluid-85 .full-width .grid16-16 {width: 85%;}
+
+/* now reset all nested full-width elements back to 100% */
+#page .grid16-16 .grid16-16 {width: 100%;}