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Thunderbird 115

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Re: userchrome.css It appears only part of my userchrome file affects customization in latest release (115). Is there any information on use of, or changes needed, to continue customizations, e.g. mail folders font weight, message pane grid lines, mail folder pane background color, thickness of pane splitters, etc.?? Everything worked in 102.x...

Re: userchrome.css It appears only part of my userchrome file affects customization in latest release (115). Is there any information on use of, or changes needed, to continue customizations, e.g. mail folders font weight, message pane grid lines, mail folder pane background color, thickness of pane splitters, etc.?? Everything worked in 102.x...

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Not yet. Use of CSS is not officially supported, and 115 supports some, but not all, of prior CSS due to extensive new code (which was one of the goals). Discovering and sharing tips and tricks with those who use CSS will take time. Thanks for posting.

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David: As suspected...thanks for input...