<head>
<style>
body { color: green; background-color:#ccc; }
p { border:5px solid black; color: orange; color:unset; background-color:blue; background-color:unset; border-top:unset; border-bottom:unset; }
</style>
</head>
<body>
This text should be green on a grey background and have only side borders.
</body>
</html>