The app is best viewed in landscape Full Screen mode or by installing the app.
iPhone / Safari
Open the
Share
menu (at the bottom or top of Safari)
Then choose
Add to Home Screen
in the menu.
Android / Chrome
You may see an Install bar at the top of the page the first time you access the page. Press the Install button.
OR
Open the full Chrome menu.
Choose
Add to Home Screen
or
Install
(The label may vary.)