CSS Properties: How to specify the border bottom color is animatable?

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HTML Code:

<!DOCTYPE html>
<title>How to specify the border bottom color is animatable</title>
#DIV {
width: 150px;
height: 100px;
border: 10px solid black;
-webkit-animation: mymove 5s infinite;
animation: mymove 5s infinite;
@keyframes mymove {
50% {border-bottom-color: #CC63FF;}
<div id="DIV">CSS, stands for Cascading Style Sheet is a computer language to describe presentation.</div>

Live Demo:

See the Pen border-bottom-animatable-answer by w3resource (@w3resource) on CodePen.


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