Add option for the properties form to only update on submit (#23)

Reviewed-on: https://git.siklos-chaneru.duckdns.org/Siklos/svg-layout-designer-react/pulls/23

src/Components/MainMenu/MainMenu.tsx

@@ -38,13 +38,8 @@ export const MainMenu: React.FC<IMainMenuProps> = (props) => {
           </form>
           <button
             onClick={() => setWindowState(WindowState.MAIN)}
-            className='block text-sm
-              mt-8 py-2 px-4
-              rounded-full border-0
-              font-semibold
-              transition-all
-              bg-blue-100 text-blue-700
-              hover:bg-blue-200'
+            className='normal-btn block
+              mt-8 '
           >
             Go back
           </button>