That particluar page is made using CSS to format the cell colour changes.
If you want to delve into it, post again to that effect and let me know the software you normally use for creating your webs.
Samsung Galaxy S8 review
1995-2015: How technology has changed the world in 20 years
This 2D animation about monsters is illustrated in a Van Gogh painterly style
How to get WWDC 2017 tickets
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.