Background Colors

Question

How do I make a lighter or darker background, or blend two colours?

Answer 1

background-color:#ff0000;
You can use gradient to work with multiple colors!!
https://www.sololearn.com/learn/CSS/2242/

Answer 2

For changing color opacity use

rgba

If this helps

https://code.sololearn.com/Wg0xa1VCx8bA/?ref=app

For multiple colors in background

If this helps

https://code.sololearn.com/W6hZ56Duci5c/?ref=app

Hope this helps ☺️☺️.