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Editorial Team
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Asked: 2026-06-15T08:16:57+00:00

For responsive designs, I use em values instead of px . (Of course, %

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For responsive designs, I use em values instead of px. (Of course, % also comes into play.)

However, when considering containers of fluid photos (e.g. div, figure, etc.), layouts sometimes call that it has a max-width property in the CSS.

If this was declared in em (e.g. 700px/16px = 43.75em), then it could resize incorrectly depending on a user’s browser settings and zoom.

Therefore, it seems that px values in CSS declarations are better-suited? But I am wary of using them now… alternatively, however, is such a precaution unfounded?

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1 Answer

  1. Editorial Team

    I’d say set it in em, but accept that users can (and will) zoom in/out and/or change their base font size. That’s just some things you can’t control.

    The best thing though, would be to set up some simple test cases and try it across a number of browsers / zoom / text-size settings.

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