<style>
    * {
        font: 20px MinervaSans;
    }
    a {
        padding: 5px;
        color: red;
    }
</style>
<style>
    @namespace url('http://www.w3.org/1999/xhtml');
    a {
        padding: 10px;
        color: green;
    }
</style>
<p>
    <a href="#">Should be green</a>
</p>