Scrollbar hides content in code blocks

[Frulfump]

🏷️ Discussion Type

Bug

💬 Feature/Topic Area

Issues

Body

Scrollbar hides content in code reference blocks in issues(probably PRs too). So as an example when there's only one line and that's long and you scroll in it the scrollbar itself hides the content. So to repro try adding a link like this in an issue
https://github.com/open-telemetry/opentelemetry-dotnet-contrib/blob/6b863e8b33f66e971cccbc9e7ea938943b634626/src/OpenTelemetry.Instrumentation.AspNetCore/Implementation/TelemetryHelper.cs#L11 as it's behaving differently in discussions, if you don't get scroll bars try making the window narrower.

Currently using Firefox 152.0.3 on Windows.

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[ZitouniNidhal]

When a code reference block (e.g., a linked file or line in an issue or PR) contains a long single line of code, the horizontal scrollbar appears on top of the content rather than beside it. This causes the scrollbar itself to hide part of the content, making it impossible to read the full line without scrolling blindly.

Steps to Reproduce:

1. Open an issue or PR in any repository.
2. Insert a link to a long line of code, such as:
   [Example Link](https://github.com/open-telemetry/opentelemetry-dotnet-contrib/blob/6b863e8b33f66e971cccbc9e7ea938943b634626/src/OpenTelemetry.Instrumentation.AspNetCore/Implementation/TelemetryHelper.cs#L11)
3. Narrow your browser window until a horizontal scrollbar appears in the code reference block.
4. Attempt to scroll horizontally: the scrollbar overlaps the content, obscuring it.

Environment:

• Browser: Firefox 152.0.3
• OS: Windows

Expected Behavior:
The scrollbar should appear below the content or in a way that does not obscure the text, ensuring all content remains visible and readable.

Actual Behavior:
The scrollbar overlaps the content, hiding part of the line and making it difficult to read or interact with the code.

Additional Notes:

• This issue may also affect PRs, as the behavior seems consistent across discussions.
• The problem is particularly noticeable with long, unbroken lines of code (e.g., URLs, long strings, or minified code).