WIP: reconstruct layouts

* presentation

resource/styles/scss/_page.scss

@@ -163,8 +163,7 @@
   }
 }
 .overlay-on {
-  .container-fluid,
-  .crowi-header {
+  #wrapper {
     -webkit-filter: blur(5px);
     -moz-filter: blur(5px);
     filter: blur(5px);