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Hello! Help me to remove from another breakpoint (320) the attached layer (header) that is in the main version. I hid it in the main version, but it continues to show up in version 320. Here in this site https://startvsem.ru

I cannot see what you have done, based on the HTML code.
If you need assistance, then please provide a demo project.

Important: before sharing the project, remove all non-relevant content.

Related FAQ:
http://www.wysiwygwebbuilder.com/forum/ ... 10&t=82134

Thanks! And then there's the question of the breakpoint (320). In some projects, there is a problem: the Main version of the site has a page height of 2100, for example, but the breakpoint 320 gets 4000. As a result, in the basic version at the bottom turns white field, how to prevent it?

For fixed containers (like layers or the page header), you will also need to hide the child elements.
You can do this via the Object Manager.

For the answer on the first answer, thank you! Can you help me with the second one?

Please see 'There is a large is empty space at the bottom or right side of my page' in the FAQ:
http://www.wysiwygwebbuilder.com/forum/ ... 10&t=63817

Can I ask you one last question? In the basement of the site https://startvsem.ru there are two elements "icon from font" and "text" when hovering there is a text darkening effect. Now the question is: can I make the icon darken when I hover over the text, and Vice versa

You can set the hover color in the propertied of the icon.
The text uses a hyperlink style, the colors for this can be set in 'Hyperlink Styles'

This is what I did, but how do I make them interact with each other, when hovering over the text, hover on the icon was activated, and Vice versa when hovering over the icon, hover on the text was triggered

You cannot let them interact with each other because these are two separate objects.
Alternative, you can use a themeable button or one of the navigation objects that supports both an icon and text.

Can I ask you another question here? When you click on the button, a window opens in the lightbox, and the entire page turns gray. You can change the color and intensity of the darkening. How do I implement this? Thanks

Each lightbox has different settings.
If you are using fancybox then you can find the available options here:
http://fancybox.net/api