CSS styling and structure error

I checked the website and the CSS is not working for me either. When I open the Developer Tools in my browser and open the Network tab, I see that there are many requests that are failing with a 500 status code, like this one:


A 500 status code usually means that there is PHP code running there, and that PHP code is crashing for some reason. If you want to see why it’s crashing, you can turn on Display Errors:

That said, I’m not sure that this URL is doing, but I would recommend against running PHP code to process CSS files on the fly. It can risk using too much server power and processes, and the performance benefits are debatable. So if there is a way to turn off this CSS optimization/compression system in your website, you may want to do that instead.