Programming Code Center(PCC)
[CSS]

(PCC)::[How-to-Set-the-border-color]::[css]

File Name : index.html

<!DOCTYPE html>
<html>
<body>

<h1 style="border: 2px solid Tomato;">Hello World</h1>

<h1 style="border: 2px solid DodgerBlue;">Hello World</h1>

<h1 style="border: 2px solid Violet;">Hello World</h1>

</body>
</html>

Output :

Hello World

Hello World

Hello World