[5.1] pixel shift from dark to light

[brianteeman]

Pull Request for Issue #43029 .

Summary of Changes

remove additional border on header buttons in dark mode
this prevents the layout shift between light/dark templates

Actual result BEFORE applying this Pull Request

Expected result AFTER applying this Pull Request

Link to documentations

Please select:

• Documentation link for docs.joomla.org:

• No documentation changes for docs.joomla.org needed

• Pull Request link for manual.joomla.org:

• No documentation changes for manual.joomla.org needed

[exlemor]

Thanks for the fix everyone (hug).

[Quy]

I have tested this item ✅ successfully on 8e7b8c7

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[viocassel]

I have tested this item ✅ successfully on 8e7b8c7

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[Quy]

RTC

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[LadySolveig]

Thank you @brianteeman and also for testing @Quy @viocassel

[brianteeman]

thanks