If you look at this page, you notice that the background image does not

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Editorial Team

Asked: May 20, 20262026-05-20T15:56:35+00:00 2026-05-20T15:56:35+00:00

If you look at this page, you notice that the background image does not move

1) How is this done?

2) Why doesn’t Twitter do something similar (ie, what are the UI disadvantages?)

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Editorial Team · Answer 1 · 2026-05-20T15:56:35+00:00

Editorial Team

CSS:

background-attachment: fixed;

My my.

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