[Solved] Fluid width layout not resizing correcly

The new 3.4.3 versions seems to have a bug.
I set the template as Fluid width design, template width 0.
Then I created a HTML module, in which I inserted an 1920x1080 image.
In the front end, the image should be resized accordly to the width of the browser window, but only a portion of the image appears. The image is resized only when the width of the windows comes to the tablet one. You can test it at nicolauto.testsrp.it .
The previous version of Template Creator CK worked fine (see www.b-b-santagostino.it ). Wondering this behaviour is due to the new 3.4.4 version of Joomla, I tested the module with the Protostar template, but it worked perfectly. So, in my opinion, the problems belongs to Template Creator CK.
Can you control, please?

Hi
in my opinion the problem comes from

img {
max-width: none;
}

which has been added in ... custom.css, so in fact added by you
CEd

You are right.
Now I'm going to mark this discussion as solved, but there is a request for you.
For this new site, I imported the gabarit from another site of mine.
The Custom CSS tab was empty, so I though no customization has been imported. On the contrary, the custom.css file contains all the customizations I made for the old site.
Is it possibile to have in the Custom CSS tab all the code coming from the gabarit, after having imported one?

It shall be there. I have added the custom.css in the gabarit export.
Contact me by email with your gabarit file so that I can check

Yes: I had used a gabarit made months ago with a previous version of Template Creator CK.
This morning I tested the procedure with a brand new gabarit and the custom CSS has been imported correctly.
Thank you.