<!doctype html>
<html>
<head>
<style>
    /* The position of :is() should override this rule. */
    container > target {
        border: 5px solid black;
        color: blue;
    }

    /* A class rule should supersede the following :is() because it has higher specificity. */
    .target {
        color: white;
    }

    /* The only subselector that matches is "container > target". It should override the simple "target"
       selector but be superseded by anything larger than two tagnames. */
    :is(foo.bar, bar.foo, container > target, foo#bar, bar#foo) {
        background-color: green;
        color: purple;
        border: 25px solid red;
    }

    /* Those two rules only have score one tagname, they cannot take precedence over :is(). */
    target {
        background-color: red;
    }
    container > * {
        color: black;
    }

    /* This rule should have the same specificity as the :is() but higher position. */
    container > target {
        border: none;
    }
</style>
</head>
<body>
    <p>This test the dynamic specificity of :is() with a complex selector. The text succeed if the text "Target" shows up in white on green background.</p>
    <container>
        <target class="target">Target</target>
    </container>
</body>
</html>