CSS 竖线颜色渐变

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>渐变的竖线</title>
</head>
<style>
.div1 {
height: 500px;
border-left: 2px solid;
border-image: -webkit-linear-gradient( #00eba7 , #08b8e6) 30 30;
border-image: -moz-linear-gradient( #00eba7 , #08b8e6) 30 30;
border-image: linear-gradient( #00eba7 , #08b8e6) 30 30;
}
</style>
<body>
<div class="div1"></div>
</body>
</html>