Hello Tugra,
Thanks for writing to us.
In case you want to set a custom height for all the sections, regretfully there is no option at the moment. I would suggest you go to the section —>Ccustomize—>Class Add a custom Class
Example Class: custom_height
Custom CSS Code Add this code to Theme Options—>CSS
.x-section.custom_height {
height: 200px;
}
Please feel free to change the class name, please note if you change the class name you need to change it to the CSS code as well. You must change the height value as well as per your design.
The purpose of providing custom CSS is to show you how to add CSS code to your site. Writing custom CSS is outside the scope of our theme support. If you need more customization, you need to learn CSS and learn how to use the browser’s element inspector or you subscribe to One where customization questions are answered.
Hope it helps.
Thanks