im not clear at all about the alpha

Question

what is the difference if we set the alpha or not

Answer 1

alpha 1 == normal,
alpha .5 == half-transparent,
alpha 0 == invincible.

Answer 2

Yes.

Answer 3

'alpha' layer in color, apply only on the color ( foreground or background ), while 'opacity' apply to all the element and its childs...
So, it's as well possible to mix both, than use only one ^^

Answer 4

ok got it 👍

Answer 5

what happen if im write the opacity only..and the alpha i did not put..is it still can be run right?