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 Full-Height as well as making a section in Minimum Height.
In order to add a minimum-height to a section:
1. In Elementor, select the section for which you want to set a min-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 Min Height.
3. Set the Height to the Min Height, a slider and an input will appear at the bottom by which you can set a minimum height value for the section.
4. Update the page.