How to change distance between controls in container

[blissful willow]

I need container (right one) sort TextureRects so distance between them always would be the same as the distance between left TextureRects (this distance is shown just for the reference, I don't need actual dependency, just fixed amount of pixels). How do I do that?

[rustic temple]

The container's Theme Overrides -> Constants -> Separation has a pixel value you can change

Otherwise if you want it to apply to all containers in the scene you can create a Theme and set the separation value from there