Ninja
Thank's for your feedback. I received the first mentioned code from one of your colleagues, see previous posts in this thread.
I'm trying the new code now, but unfortunately it does not improve when I use the Chrome browser. And when using Edge, the problem with a very small image is gone, it now appears in normal size. But the image is now displayed too far to the left also when reading from a PC. So all in all, the new code did not get any better.
Please let me know if you have a solution for this, otherwise we can just leave it as it was with the previous code. As previously mentioned, it is not very important for me to solve this last detail, which only appears when the contact form is read with the short side up on the tablet.