Review comments

IPython/html/static/edit/less/edit.less

@@ -15,7 +15,7
     }
 
     #texteditor-container {
-        .CodeMirror-gutter {
+        .CodeMirror-gutter, .CodeMirror-gutters {
             @media print {
                 background-color: @body-bg;
             }

IPython/html/static/notebook/less/codemirror.less

@@ -11,6 +11,7
 
 .CodeMirror {
     line-height: @code_line_height;  /* Changed from 1em to our global default */
+    font-size: @notebook_font_size;
     height: auto;     /* Changed to auto to autogrow */
     background: none;  /* Changed from white to allow our bg to show through */
 }