Can someone helps me to disable the horizontal scrolling in editor? the reason being is that i would like to limit the total width of editor so that cannot type content more than that. Once the user enter content with length more than editor defined width, the content published out possible will more than the width of the TABLE containing it.

I tried to set CSS of "Overflow:hidden" in "Theme/Custom"  folder, however, if i type a word likes "dddddddddddddddddddddddddddddddddddddddddddddddddddddddddd" and more, the horizontal bar still shows.