In my Facebook group, a user asks: 
Can you create a simple tutorial for oxygen for a full-screen image? I'm trying to recreate my website that uses elementor with oxygen on my localhost. So, I have a header then 1 image full screen then footer for my home page. But for the life of me, I can't get the 1 image to fill the area.This members-only tutorial provides the steps to display a header, footer pushed to the bottom of the browser and a Section in between that takes up the remaining height of the viewport.
Step 1
Edit your Template/Page in Oxygen. a) Add your desired header. Give it a class of say,site-header
. b) Add a Section below the header. Give it a class of say,
full-height-section
. c) Add your desired footer. Give it a class of say,
site-footer
. d) Add a Code Block element below the footer. PHP & HTML:
<?php
// echo "hello world!";
?>