remove stripes from posting preview

What does this PR do?

Just remove those stripes. I like them, but almost everyone else who we talked to wants them gone.

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requested review from @tess, @Marie, @julia, @fEmber, and @puppygirlhornypost

approved this merge request

enabled an automatic merge when all merge checks for 99199567 pass

added enhancement label

approved this merge request

merged

mentioned in commit e87dddcc

mentioned in merge request !812