Sample OSAC article on Custom Attributes.

The HTML File look like this

<!DOCTYPE html>
<html>
<head>
<style>
        body {
            background-color: "red";
        }
        article[data-parent="OSAC-1"] {
            width: 1000px;
            font-size: 50px;
            color: green;
        }
        article[data-parent="OSAC-2"] {
            width: 600px;
            color: black;
            font-size: 50px;
        }
    </style>
</head>
<body>
    <article id="1"
        data-title="custom-attributes"
        data-parent="OSAC-1">
        Sample OSAC-1 article on Custom Attributes.
    </article>
 
    <article id="2"
        data-title="custom-attributes-2"
        data-parent="OSAC-2">
        Sample OSAC-2 second article
        on Custom Attributes.
    </article>
</body>
</html>