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I'm not aware of a way to remove keywords in MOZ directly, but you could always export to csv and filter it there. Or it may be that all or the majority of these keywords have a low difficulty if they are based on a brand or product name and you can filter them out that way. Just keep in mind that you may loose some good ideas by doing that.

Hi Curtis, By the sounds of things I think you might well have over-engineered your responsive website! You clearly understand the principles of responsive design and are a better developer than me, but unfortunately it seems the use of media queries here isn't optimal compared to a fluid grid system: https://www.w3schools.com/w3css/w3css_grid.asp  Why don't you make your question redundant by trying to incorporate a single div? Plus then you might be able to remove some jQuery which could speed up your site. To specifically answer your question about duplicate content...the only way of knowing would be to test rankings before and after. Generally it's believed that Googlebot would be smart enough to realise why there's a small amount of "hidden" content, but personally as an SEO (someone trying to optimise as efficiently as possible), I wouldn't want to risk it! How Google Defines Cloaking - https://support.google.com/webmasters/answer/66355?hl=en  A Google product forums discussion around display:none and mobile design; - https://productforums.google.com/forum/#!msg/webmasters/zB0Gqjajfis/E6tgJs7_AwAJ  Best of luck, Nick