There's been movement at the station with regards to site design for beta sites, and Stack Exchange staff are asking for feedback in meta posts, like this one at Spanish.SE. I'm just wondering if there is any way us users can play around with designs, so as to facilitate more concrete discussions.

Question: Is there any way we can experiment with site design locally, or in some kind of sandbox?

I can whip up mock-ups in drawing packages, but I feel like it should be possible for some script to implement it locally:


1 Answer 1


The usual way for me to experiment with styling on all websites is to use my browser's developer tools, e.g. as described in Click and edit CSS with Firefox?. The downside is that refreshing the page or navigating away undoes your changes.

I guess a better solution for long-term experimenting would be to

but I haven't tried that yet.

  • 3
    Probably could be achieved a lot easier here, depending on what level of customization you wanted to do. For example, the colors are based on only a handful of CSS variables that could be overwritten in a custom stylesheet. E.g. --theme-base-primary-color-h, --theme-base-primary-color-s, and --theme-base-primary-color-l on the body control the primary color of the page directly. (This simplicity was the purpose of the design overhaul that delayed custom themes for so long.)
    – animuson StaffMod
    May 26, 2022 at 17:28

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