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:-moz-system-metric(scrollbar-thumb-proportional) Redirect 1

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:-moz-system-metric(scrollbar-thumb-proportional) will match an element if the computer's user interface uses proportional scrollbar thumbs; that is, the draggable thumb on the scrollbar resizes to indicate the relative size of the visible area of the document.

This selector is intended for use mainly by theme developers.

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Last updated by: Sheppy,