Hey there 
I recently embedded some code into my dawn theme. I got the code from the community. It enables a second picture for mobile view, as well as the mobile picture being displayed in its original size.
Now, I noticed that when I add a second picture for mobile, the original picture for desktop gets blurry. When I delete the second picture for mobile, it stays sharp. How can I get a sharp desktop image, while keeping the uncropped second picture for mobile?
This is my website: https://wolkenweile.de/
Password: 54321
Thank youu