To implement animation on border-right-width property with CSS, you can try to run the following code
Example
<!DOCTYPE html>
<html>
<head>
<style>
div {
width: 500px;
height: 300px;
background: yellow;
border: 15px solid yellow;
background-image: url('https://www.tutorialspoint.com/latest/cuda.png');
animation: myanim 3s infinite;
background-position: bottom left;
background-size: 50px;
}
@keyframes myanim {
30% {
background-color: maroon;
border-right-color: red;
border-right-width: 25px;
}
}
</style>
</head>
<body>
<h2>Performing Animation for border right width</h2>
<div></div>
</body>
</html>