how to add gradation in css code example

Example 1: css horizontal gradient background color

.foo {
	background-image: linear-gradient(red, blue);
}

Example 2: linear gradient in CSS

The general syntax of linear-gradient is-
background: linear-gradient(gradient direction, color1 , color2 , color3, .....);

Forexample-
background: linear-gradient(46deg,green,blue,yellow,pink);

NOTE: (common mistake) we forget to write the semi-colon (;)