codemirror widths and lefts are so large they push codemirror to right edge of browser #33
Description
using babel and webpack-dev-server to bundle and serve the the rendered GraphiQL component. For some reason the margin-left and certain width style properties are set to almost the entire width of the screen so all i see is a blank space and then the first character of each code line up against the right side of the browser window
<div class="CodeMirror-sizer" style="margin-left: 1904px; margin-bottom: 0px; border-right-width: 30px; min-height: 675px; min-width: 619px; padding-right: 0px; padding-bottom: 0px;">
<div ....>....
</di>
</div>
