* Reworked the way that the editor and output are rendered when the browser window / panes are resized horizontally. Moved the ReflexContainer elements into the editors variable to get vertical resizing working. Also, removed the margin-bottom property from the .editor class in classic.css and set overflow to hidden in .react-monaco-editor-container. By doing this it prevents the browser scrollbars from appearing and removes the white space at the bottom of the editor / output panes when scrolling all the way down past the code.
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