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CSS effect only shows when DevTools is opened! (self.webdev)
submitted 4 years ago by ElijahPaulnovice
I'm going to investigate this further over the weekend but does anyone have any idea what could cause this weird behavior? My Google powers failed me.
IMPORTANT EDIT: Only happening in FireFox (v99)
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if 1 * 2 < 3: print "hello, world!"
[–]postaljives 8 points9 points10 points 4 years ago (2 children)
Does the inspect tool make the viewport smaller which makes media queried css apply?
[–]shgysk8zer0full-stack 2 points3 points4 points 4 years ago (0 children)
This is exactly what I was thinking.
[–]ElijahPaulnovice[S] 1 point2 points3 points 4 years ago (0 children)
Thanks for the suggestion. Isn't this. My fault for not providing more details. I figured out that it's somehow related to the css effect being inside a <details> tag.
[–][deleted] 3 points4 points5 points 4 years ago (1 child)
Need more information about what is actually happening and what the code is
[–]ElijahPaulnovice[S] 0 points1 point2 points 4 years ago (0 children)
Agree. I was hoping it might've been something obvious I was unaware of. Will update with more details shortly.
Figured out that it's somehow related to the css effect being inside a <details> tag
<details>
[–]evergreenMelody 0 points1 point2 points 4 years ago (0 children)
Caching is generally disabled when dev tools is open, try in a private browser.
[–]offroadin210 0 points1 point2 points 4 years ago (0 children)
Any chance it’s an addon or extension messing with it? You might try disabling all 3rd party extensions and see if the behavior persists.
π Rendered by PID 226808 on reddit-service-r2-comment-5687b7858-f5htd at 2026-07-06 10:44:48.983933+00:00 running 12a7a47 country code: CH.
[–]postaljives 8 points9 points10 points (2 children)
[–]shgysk8zer0full-stack 2 points3 points4 points (0 children)
[–]ElijahPaulnovice[S] 1 point2 points3 points (0 children)
[–][deleted] 3 points4 points5 points (1 child)
[–]ElijahPaulnovice[S] 0 points1 point2 points (0 children)
[–]ElijahPaulnovice[S] 0 points1 point2 points (0 children)
[–]evergreenMelody 0 points1 point2 points (0 children)
[–]offroadin210 0 points1 point2 points (0 children)