How to strip text formatting in listing view

Hello,
I would like to have the text formatting stripped when in listing view so that all the listings are uniform. I have attached a screenshot of how when the blog post starts out with the font enlarged for such thing like as a heading and it appears in the same large format on the listing page. This makes it stand out from the others and people could also make fonts different color, etc.

Please let me know if stripping font formatting in listing view is possible.

Thanks