curve multicolor border css code example

Example 1: vertical multi color border css

.fancy-border {
  width: 150px;
  height: 150px;
  text-align:center;
  border-top: 5px solid;
  border-image:   linear-gradient(to right, grey 25%, yellow 25%, yellow 50%,red 50%, red 75%, teal 75%) 5;
}

Example 2: vertical multi color border css

<div class="test"></div>