fix(frontend): z-index of header vs codemirror fullscreen editor

Author: paulrobertlloyd

packages/frontend/styles/vendor/codemirror.css

@@ -103,7 +103,7 @@
   inset: 0;
   inset-block-start: var(--toolbar-height);
   position: fixed;
-  z-index: 8;
+  z-index: 1008;
 }
 
 .CodeMirror-placeholder {

packages/frontend/styles/vendor/easy-markdown-editor.css

@@ -74,7 +74,7 @@
     inset-block-start: 0;
     inset-inline: 0;
     position: fixed;
-    z-index: 10;
+    z-index: 1010;
   }
 
   & button {
@@ -148,5 +148,5 @@
   padding: var(--space-l);
   position: fixed;
   word-wrap: break-word;
-  z-index: 9;
+  z-index: 1009;
 }