Not only the appearance, the images are going out of the container, only the first image stays in the container, if the slider plugin has buttons/arrows for prev/next, they are not shown. There should be a code that I have not inserted in a php file theme.
Sorry for my double post.
The slider plugins aren’t working fine and I think that the theme needs a code in functions.php or somewhere else, I’m inserting images on slider (in admin panel) also the shortcode in header.php, and the images are shown “one under another” on site (this happens on every plugin). I also tried to insert code in pages or posts, it’s the same problem on every plugin. There must be a php code or something else that i didn’t introduced in a php file on my theme ( I am sure that this is the problem).