I don't understand this value.

Question

Outline-color:invert;

Answer 1

"To ensure the outline is visible, performs a color inversion of the background. Note that browsers are not required to support this value; if they don't, this keyword is considered invalid."

source: https://developer.mozilla.org/en-US/docs/Web/CSS/outline-color

'color inversion' means black will be white, white will be black, and so on (colors are replaced by their complementary color -- if I'm not mistaken yellow and blue are complementary for example)

Answer 2

... of what's is on the screen when something is drawn (but I tried on my android tablet and that's not working too: I guess that support isn't wide at all!)

Answer 3

visph I tried it with white background but it doesn't take black value ? Did I misunderstand?

Answer 4

Read again the second sentence of my previous quote ;)

Answer 5

visph I don't understand.... Complementary to what ? I mean the color of the outline is complementary to the color of ...?

Answer 6

visph thanks for your interest.