Apart from other StackExchange projects, Islam, Christianity, Judaism and other religious Q&A sites, especially the site of Islam, may contain 3 different types of
<blockquote>All other quotes
Reason: In Islam, Quranic verses are highly acceptable with any Q or A. Hadithic verses are in this list, the second. And other verses or quotes are then in the rest. A Q or A cited with Quranic verses or Hadith verses will get more acceptance in general, so we can do CSS for them differently.
This is nothing but to do CSS for different types of verses differently.
For CSS suggestion
with a soothing color background and some Arabic ornamental design at the edge or one side.
with a soothing color background, different from Quranic verses, and some Arabic ornamental design at the edge or one side.
it can stay as it presently is.
P.S.: The same feature request can be implemented in the StackExchange site for Christianity, Judaism and all other sites required such kind of authentic text for the clarification or authenticity of the information.