Description and Extra Info blocks are not clearly separated

[arielj]

Before we start...:

• I checked the documentation and found no answer
• I checked to make sure that this issue has not already been filed
• I'm reporting the issue to the correct repository (for multi-repository projects)

Branch/Commit:

Main branch

Expected behavior:

There should be a clear distinction between the story's description and the extra info when displaying a story. Both in the show action and in the estimate action.

Actual behavior:

It's not clear when one ends and the other starts:

Steps to reproduce:

1. Step 1: Create a story with description and extra info
2. Step 2: Go to the show page

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