Fix styling for initial codemirror text area
Fix styling for initial codemirror text area

jdfreder/nteract,rgbkrk/nteract,nteract/composition,jdfreder/nteract,nteract/composition,rgbkrk/nteract,captainsafia/nteract,nteract/nteract,jdetle/nteract,jdfreder/nteract,rgbkrk/nteract,jdetle/nteract,nteract/nteract,jdetle/nteract,nteract/composition,rgbkrk/nteract,jdfreder/nteract,captainsafia/nteract,captainsafia/nteract,captainsafia/nteract,jdetle/nteract,nteract/nteract,rgbkrk/nteract,nteract/nteract,nteract/nteract