CSS Border Colour Into 4 Colours

Question

Is there any way that I can have 4 different colours on one side of a border in CSS? I currently have

#header
{
border-color:#88a9eb;
}

I w

Answer 1

Best solution is with linear-gradient. Definitely. But someone who's the beginner in this could find this solution useful. By using 2-3-4 colors or even more, this is the right way to do them. Not the best solution for this question, but maybe someone while reading this wants to understand better how do the colors with borders work.

One-colored border!
Two-colored border!
Three-colored border!
Four-colored border!