CSS – codewindow.in

In the example above, the background-color property is set to rgba(255, 0, 0, 0.5), which represents a translucent red color with 50% opacity. The RGB values (255, 0, 0) specify the red color, and the alpha value 0.5 determines the transparency level.

Using RGBA values in the background-color property allows you to create backgrounds with transparency, blending the background color with the underlying content or background layers. This can be particularly useful for creating effects such as overlays or highlighting certain elements while still maintaining visibility of the underlying content.