Jittery Scrolling

What: Jittery Scrolling, or very slow scrolling in Chrome-based browsers. It’s caused by too many paint operations when scrolling, in my particular case caused by an SVG set as a background-image with background-size: cover and background-attachment: fixed.

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scroll-margin-top

What: CSS-Tricks just posted about this last Friday and since I could have used this that day (!) but didn’t find it until now, I’m adding a note here for myself:

You have a page with a table of contents (with links), or you have a one page website with in-page navigation and you have a fixed header — when you click a link the content scrolls up too far and is hidden by the fixed header. This is not a good user experience, and you can improve it with scroll-margin-top in Firefox and Chrome-based browsers…

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