modify layout

src/client/styles/scss/_linkedit-preview.scss

@@ -1,11 +1,15 @@
-.popover .popover-body {
-  .linkedit-preview {
-    .page-editor-preview-body {
-      max-height: 70vh;
-      padding-top: 0px;
-      .wiki {
-        overflow-y: scroll;
-        font-size: 100%;
+.popover {
+  .popover-body {
+    .linkedit-preview {
+      .page-editor-preview-body {
+        max-height: 70vh;
+        padding-top: 0px;
+        margin: 0px -10px 0px -10px;
+        .wiki {
+          width: 200%;
+          overflow-y: scroll;
+          transform: scale(0.5) translate(-50%, -50%);
+        }
       }
     }
   }