<style>
.class2:focus-within { display: contents; }
</style>
<script>
if(window.testRunner)
    testRunner.dumpAsText();

function main() {
    input.setSelectionRange(0,31,"forward");
    input.focus();
}
function f1() {
    var input = document.getElementById("input");
    document.execCommand("justifyRight",false,null);
    a.text = "This test passes if it doesn't crash.";
    input.type = "checkbox";
}
</script>
<body onload="main()">
<a id="a" onfocusin="f1()">
<span class="class2">
<input id="input">