Creating page content that sticks to the viewport as you scroll, something like a jump-to-anchor menu or section headings, has never been easier. Throw a

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Sticky positioning can get a bit tricky, particularly when it comes to height and the dangerous situation of hiding content in a position that can’t be scrolled to. I recently worked on a desktop layout that we’re all familiar with: a main content area with a sidebar next to it. This particular sidebar contains action items and filters that are pertinent to the main content.

A Dynamically-Sized Sticky Sidebar with HTML and CSS