How to add Alpha channel in colors in HTML, i.e. what's the code for RGBA color?

Answer 1

background: rgba(100, 100, 100, 0.5)
last param is the alpha

Answer 2

RGB is 0 to 255, A is 0 to 1

Answer 3

oh so there's no format like #rrggbbaa?? and Nicolas dassault pilon, these values are in numerics and not hexadecimal??

Answer 4

https://code.sololearn.com/Wm7wUM0u8SG1/?ref=app