Commit mobile testing on Termux, will finish on laptop.

pages/helpers/main.css

@@ -38,6 +38,9 @@
 
 			/* Handle mobile devices a bit better, making columns break out as rows. */
 
+            .banner-desktop { display: block; }
+            .banner-mobile { display: none; }
+            
 			/* Phones */
 			@media (max-width: 767px) {
 				[class*="col-"] {
@@ -55,13 +58,20 @@
 				}
 			}
 
-			/* Both */
+			/* Both Mobiles */
 			@media (max-width: 1023px) {
 				[class*="col-"] {
 					float: none;
 					display: block;
 				}
-				.banner-image { display: none; }
+                .banner-image {display: none; }
+				.banner-desktop { display: none; }
+				.banner-mobile { display: block; }
+			}
+            
+            /* Desktop */
+			@media (min-width: 1024px) {
+                
 			}
 
 			/** Make the menu items centered and layout horizontal. **/