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I would love feedback about how I perform asynchronous requests and treat the retrieved data. I also welcome any other feedback.

Thanks!

I think I still can improve the handling of the responsive images. Could you please check it? I also welcome any other feedback!

I think I can improve the handling of responsive and flexible images. Also, any general feedback is welcome.

I am not good at UI/UX at all. When the user inputs an invalid IP or domain, I added a box showing the error with a crying face. The design of this box can be improved tremendously, but I do not know how to do it.

Besides, any other feedback is welcome too. Thanks!

In order to make the hero image responsive, I had to include a media query by using picture and source in the HTML file.

However, I want all the media queries in the CSS. I tried CSS background images, but it was impossible because I had to set a specific height to the image.

Is there a way to achieve the same thing by only using CSS?

Thanks a lot!