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

You can use box-shadow and after psuedo-element to do this

What I did:

I first created an :after element on the bottom, then added box-shadows horizontally with different colors

If you want to change the strength of the border simply give more height to the :after element

div {
  width: 200px;
  height: 100px;
  position: relative;
  background: grey;
}
div:after {
  bottom: 0;
  position: absolute;
  content: "";
  width: 50px;
  height: 5px;
  background: green;
  box-shadow: 50px 0 0 0 red, 100px 0 0 0 orange, 150px 0 0 0 green;
}

Same thing on a larger div will be like this

div {
  width: 500px;
  height: 100px;
  background: orange;
  position: relative;
}
div:after {
  bottom: 0;
  position: absolute;
  content: "";
  width: 100px;
  height: 5px;
  background: green;
  box-shadow: 100px 0 0 0 darkred, 200px 0 0 0 red, 300px 0 0 0 yellow, 400px 0 0 0 tomato;
}