HTML Code

I learnt the following about HTML codes:

CHANGE THE BACKGROUND COLOR
CHANGE THE TEXT
CHANGE THE FONT SIZE
CHANGE THE FONT COLOR
CHANGE THE FONT STYLE
INSERT A NEW PICTURE
PUT AN IMAGE IN THE BACKGROUND
MAKE YOUR TEXT A LINK
MAKE A PICTURE A LINK

The colour chart to change the colors is very large. Many codes with numbers and sometimes letters are the ones used to change colors of text and background.