Hello @riugn557,
Thanks for updating the thread.
You need to do couple of things to make the necessary changes. Please follow the below steps.
- Open Russian Guide page in Content Builder and open the Row that’s holding quick navigation item.
- Change the z-index value from 1 to say 999.

- After that open the text element and under Customize > Class add a class name ex quick-nav-position.
- After that add following CSS under Pro > Theme Options > CSS:
.quick-nav-position {
position: absolute;
top: -30px;
}
Here is a screencast video that I have recorded, you can take a look. https://cloudup.com/cYFnBnCr0-i
If you would like to learn CSS, I am sharing few resources that you take a look to get started with CSS and an interesting tool that you can use to speed up the development process.
I recommend you to watch following video that will help you to get started with CSS.
https://www.youtube.com/watch?v=MFR4WXiLzpc
Sometimes it can get a bit difficult to find out the right selector to be able to write the required CSS codes. A handy tool that can help you in this is Google Chrome dev tools. I am sharing the resource that you can refer to get started with dev tools.
https://developers.google.com/web/tools/chrome-devtools/css/
https://developers.google.com/web/tools/chrome-devtools/
https://www.youtube.com/watch?v=tP_kXBJWPhQ&t=200s
Thanks.