Height Header Image

Hi!
The height of the header area is set to shrink and expand with the height of the image that is used.
What happens if you use an image that is 400px high?

A smaller image will mean that the header widgets will not be visible.

Thx for your answer,
I tried to used an image 1900x400px but it was resized automatically into 1900x860px, so that the half of the image is not visible.

I’m not able to reproduce that. Did you select “Crop image” ?

Try deactivating all plugins and try again, activate them one by one to see if there is any collision between plugins and the theme.

And I don’t understand how making the image larger would make only half the image visible? I am not sure I understand what you mean.

Thx for your answer.
I mean, I uploaded an image 1900x400px, but it’s shown not completely.
I give you the link of the original image 1400x395px:
https://www.ashley-trav-lyon.com/wp-content/uploads/2017/07/cropped-pexels-photo-534164.jpeg
And now I give you the link of my site. There you can see the difference:
https://www.ashley-trav-lyon.com
Sorry, my english is not very good but I try my best