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Comment by yafujifide | Hacker News Reader

I was able to set the width of the body using this command:

document.querySelector('body').style['width'] = '40em';

However, setting the max-width did not work:

document.querySelector('body').style['max-width'] = '40em';

Any idea why?

Is it not style.maxWidth in that context?

CSS attributes become camelCased on the style object.

    document.body.style.maxWidth = '40em'(

Will work.

That's it! Thanks.