Editor: remove flexbox centering from preview-area

Author: pepc84

editor/index.html

@@ -68,9 +68,6 @@
       flex: 1;
       background: #111;
       overflow: hidden;
-      display: flex;
-      align-items: center;
-      justify-content: center;
     }
     #preview-area canvas { display: block !important; }
     #preview-area iframe { width: 100%; height: 100%; border: none; display: block; }