delete vh add vw

src/client/styles/scss/_on-edit.scss

@@ -31,26 +31,10 @@ body.on-edit {
 
   .grw-page-path-nav,
   .grw-page-path-nav h1 {
-    width: 800px;
+    width: calc(100vw - 460px);
     overflow: hidden;
     text-overflow: ellipsis;
     white-space: nowrap;
-
-    @include media-breakpoint-only(xs) {
-      width: 100px;
-    }
-    @include media-breakpoint-only(sm) {
-      width: 300px;
-    }
-    @include media-breakpoint-only(md) {
-      width: 420px;
-    }
-    @include media-breakpoint-only(lg) {
-      width: 500px;
-    }
-    @include media-breakpoint-only(xl) {
-      width: 800px;
-    }
   }
 
   .page-wrapper {