My goal is to have two different site templates, one for desktop (which is already good) and one for mobile.
For the mobile template, I want it to display only an image that fills the entire screen. The image should take up all the available space in terms of height and width. Once a button is pressed, the page will scroll down to reveal the rest of the content.
Here's an example:
https://i.stack.imgur.com/cZTEN.jpg
I have created an example on Fiddle at jsfiddle.net/gtw7375/yrmbsfhu/
However, I am not sure how to center the image and make it the sole content occupying the entire height of the page. Can anyone advise me on how to achieve this?