Mix Webix and Bootstrap 4

Hi team,

When i put the Boostrap 4 NavBar, the Webix space stay with 100% heigth

What is the good way to the Webvix space fit correctly after the nav bar please ?

With BS4 :
https://snippet.webix.com/g0bm05dd

Without :
https://snippet.webix.com/0xieauxb

you have to put webix layout into separate container and set dimensions to this container.
https://snippet.webix.com/4yp4py32

Thank you very much @integral