Loading screen for each resolution?

Hello,
I put a loading screen with the resolution 1600x900 on my gmod server because my resolution is 1600x900. But if someone connects with a lower/higher resolution, the loading screen is too big/small. How can I do that, that there is a picture for all resolutions and if there is a player with 1024x768, a loading screen with 1024x768 will be shown, and so on.
How can I realize that?

Maksimo007


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(User was banned for this post ("REPORT, don't reply to backseat moderate." - postal))

Search google for ‘responsive web design’, this should help you find an answer. A lot of people seem to rely on Bootstrap, but all that’s actually needed are CSS media queries. I’d suggest in using the latter as to improve loading screen page load times.