fix: padding for editor

Author: Huy-DNA

packages/dbml-playground/src/components/DbmlEditorPane/DbmlEditorPane.vue

@@ -2,7 +2,7 @@
   <pane min-size='75' max-size='75' size='75'>
     <slot>
       <Editor
-        class='h-full overflow-auto border rounded border-gray-300 flex flex-col'
+        class='h-full bg-white overflow-auto border rounded border-gray-300 flex flex-col'
         @source-change='(newSource) => compiler.setSource(newSource)'
       />
     </slot>

packages/dbml-playground/src/components/DbmlEditorPane/Editor/Editor.vue

@@ -1,5 +1,5 @@
 <template>
-  <div ref='editorDomNode' class='w-full h-full'></div>
+  <div ref='editorDomNode' class='w-full h-full p-1'></div>
 </template>
 
 <script setup lang="ts">