Background-color property

The background color can be set using the CSS property background-color.

Here's an example of using the property:

selector {
  background-color: #ff0000;
}

Colors in CSS can be set in different formats: in hexadecimal, in RGB or RGBA, and with color constants such as red or green.

Here are examples of how the red background color is set in different formats:

background-color: red;
background-color: #ff0000;
background-color: rgb(255, 0, 0);
background-color: rgba(255, 0, 0, 0);