What is rgba?..

Answer 1

Red Green Blue Alpha. The 3 main color values (RGB) and a transparency value (A).

Answer 2

rgba:red green blue alpha
where values are between
red:0-255
green:0-255
blue:0-255
Alpha transparency:0-1

Answer 3

it is a color value
r-red
g-green
b-blue
a-alpha
you can used as transparent color of this color property

Answer 4

Red green blue alpha

Answer 5

Its same as rgb which is 24 bit color mode. But rgba has fourth argument which is its opacity.

rgba(255, 255, 255, 1)