Please help us help you and fill where relevant:
Your LimeSurvey version: 6.3.8
Own server or LimeSurvey hosting:
Survey theme/template: fruity (extended)
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I set a logo for my survey. It works fine if using laptop/desktop but disapears if using mobile phone. I guess this can be fixed by alter the code in theme css file but I don't know where to look and which code to alter. Could you please help?

A sample survey is live here:
[url] cph-qub.limesurvey.net/269139?lang=en [/url]

Thank you!

See this thread about it
[url] forums.limesurvey.org/forum/design-issue...n-the-mobile-version [/url]

Thank you Joffm. Using the solution with second image for mobile, the logo shows up but the menu navigation button also show (although theme setting is no menu navigation); plus in destop/laptop, the logo moves to the right hand side (it was in the left).

Could you suggest how can I fix this?