Add bottom margin to app-db data

.idea/codeStyleSettings.xml

@@ -7,6 +7,7 @@
   :cljs.test/are 2
   :clojure.test/are :only-indent
   :cursive.formatting/align-binding-forms true
+  :day8.re-frame.trace.utils.macros/with-cljs-devtools-prefs 1
 }</ClojureCodeStyleSettings>
       </value>
     </option>

src/day8/re_frame/trace/panels/app_db.cljs

@@ -148,4 +148,5 @@
                       [:span.subtree-button-string
                        (str path)]]]]])
                 @subtree-paths))]
-        [subtree @data [:span.label "app-db"]]]])))
+        [:div {:style {:margin-bottom "20px"}}
+         [subtree @data [:span.label "app-db"]]]]])))