Fix intermittent issue with the Sub Menu

themes/default/css.php

@@ -450,7 +450,7 @@ else { //default: white
 		}
 
 	body {
-		z-index: 1;
+		z-index: auto;
 		position: absolute;
 		margin: 0;
 		padding: 0;
@@ -3349,4 +3349,4 @@ else { //default: white
 //output custom css
 echo $custom_css_code;
 
-?>
+?>