hi
it depends on the course and its detail
as you can see here
http://prntscr.com/vh84n3
height is according to the description it's totally responsive
but if you want to fix it then please provide us the details so we can provide the custom css code
hi
please add this in wp-admin>>appearance>>customize>>custom css
.elementor-page-2529 .elementor-column.elementor-col-100.elementor-top-column.elementor-element.custom-course-card {
height:400px;
}
http://prntscr.com/vhu1x6