Excluding blog posts from universal css code to centre align text on mobile

Hi everyone,

I have managed to centre-align all text on my mobile site, which is working, but looks terrible for blog articles. I was wondering if there was a quick way to exclude the blog posts from a universal text align with css? 

The code I have used is below:

// centre align all text on mobile
@media only screen and (max-width: 480px) {
p, H1, H2, H3 { text-align: center; }}

Thanks so much

Talia

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