Responsive images in full width theme

Hello,

I uploaded pictures in a width of 750 pixels and when I check different screen resolutions with the normal theme they look good in different screen resolutions. But when I change the theme to full width, the pictures look good up to a screen resolution of 1280 x 720, but they look stretched and blurry with 1920 x 1080 for example. I added this code:
https://colorlibsupport.com/t/full-width-with-sidebar/

I there a way to have a full width theme for pictures up to 750 pixels wide, that does look good for all screen resolutions? Or do I have to upload bigger pictures now?

Best regards

In case someone still reads this, I also have this problem:
I have an image at the start of each blog post with text wrapped around it. The size stays the same, no matter if viewed from desktop or a mobile device. When I access the blog from a smartphone the picture almost covers the whole width. Is there a way to make these pictures responsive as well?

Resolved. The screen resolution tool did not work properly.

Hi @opti8,

Awesome great to see you got that resolved.

Please advise if you have more questions.

Have a fantastic day!

Cheers,
Movin