Changes to blocks and styles

includes/blocks/lcp-main-area/build/block.json

@@ -3,7 +3,7 @@
   "apiVersion": 3,
   "name": "lcp/main-area",
   "version": "0.1.0",
-  "title": "Main Content",
+  "title": "Content Container",
   "category": "widgets",
   "icon": "smiley",
   "description": "Viewport container which is designed to be the parent of all other blocks",
@@ -15,6 +15,10 @@
     "maxWidth": {
       "type": "string",
       "default": "100%"
+    },
+    "expandVertical": {
+      "type": "boolean",
+      "default": true
     }
   },
   "textdomain": "lcp-viewport",