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

I have taken what harry had and amended it to suit my needs. I now have:

  border-image: linear-gradient(to right, #8CC63F 0%, #006F3B 25%, #ED1C24 25%, #9B1B1E 50%, #85CDEC 50%, #217EC2 75%, #FFC20E 75%, #F04E23 100%);
  border-image-slice: 3;
  border-image-width: 0px 0px 4px 0px;
  border-image-repeat: round;

This is the best solution for my needs.