URL: https://github.com/webcompat/webcompat.com/issues/new
Browser / Version: Firefox 49.0
Operating System: Mac OS X 10.11
Problem type: Layout is messed up

Steps to Reproduce

1. Navigate to: https://github.com/webcompat/webcompat.com/issues/new
2. Add

<details><summary>

This is summary</summary>

Details</details>

to the issue description under "Write" tab.
3) Switch to "Preview"

Expected Behavior:
<summary>

should have a triangle.

Actual Behavior:
<summary>

has no triangle because it has style "display: block;" Remove "display: block" should fix this issue.

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