move the masthead above the content

brompton/sass/_extra-child-theme.scss

@@ -38,6 +38,7 @@
 	min-height: #{100 - map-deep-get($config-global, "spacing", "vertical")};
 	padding-top: #{0.5 * map-deep-get($config-global, "spacing", "vertical")};
 	position: relative;
+	z-index: 2;
 
 	&:before {
 		background: #{map-deep-get($config-global, "color", "foreground", "default")};
@@ -650,7 +651,7 @@ table,
 		padding-left: 0;
 
 		li > ul {
-			padding-left: inherit;			
+			padding-left: inherit;
 		}
 	}