How i can colour my site in html

Answer 1

https://www.sololearn.com/learn/CSS/1079/

In CSS lesson

Answer 2

Thanks its work.

Answer 3

Use CSS for all kinds of designing.
element / #id / .class {
background-color: red / rgba(255, 0, 0, 255) / #ff0000
}

Answer 4

It works without of css.