Divi Blurb Extended is your answer to these search terms on Google. If you are looking to style Divi Blurb, it can be done using a plugin that adds lots of features to Divi Blurb.
This plugin is from DiviExtended.com and is the second plugin after Divi Blog Extras from this company.
So if you are trying to search for any of these, your answer could be hidden in Divi Blurb Extended
Here are some demo that includes divi blurb hover feature, divi blurb styles, it does not include manual divi blurb css.
If you like these divi blurb example, feel free to visit the product page from the link above to get more information.