By default the height of a Section in Elementor is equal to the height of its content which is called Default Height.
But you can set the height of a section to a Minimum Height as well as making a section in Full-Height.
In order to create a Full-Height section:
1. In Elementor, select the section you want to set it to full-height so that a new dashboard on the left will emerge with the element's settings.
2. In Layout tab, change the Height setting to Fit To Screen.
3. Update the page.