Remove menu element styles (#6213)

* Remove `main` element default styles

* Remove `menu` element default styles

Author: AviAvinav

src/css/preflight.css

@@ -288,7 +288,8 @@ legend {
 }
 
 ol,
-ul {
+ul,
+menu {
   list-style: none;
   margin: 0;
   padding: 0;