RGBA stands for red, green, blue, and alpha, and is often used when designing websites with CSS. In order to use RGBA in CSS, the "rgba()" function is used with 4 values: the amount of red, green, blue, and the alpha (opacity). For example, "rgba(200, 10, 50, 0.5)" will create a color that is a shade of red, but has some blue and green mixed in and 50% opacity. This color can be used like other colors in CSS, such as in the background-color property, like this:
background-color: rgba(200, 10, 50, 0.5);
Hope this helps!
