You might not need to use <table> html tag for a table, but just use CSS.
In this note main content were recorded when we were learning from w3schools HTML5 tutorials. Please go to there to get full and more information.
Center Alignment is CSS
1: Center Fixed-Width Layouts:
Online check HTML Color Codes
Here is a nice website to let you check HTML color codes online:
CSS Id vs Class
ID is unique