<script>
if (window.testRunner)
    testRunner.dumpAsText();
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<style>
:last-child {
    -webkit-animation-name: name5;
    -webkit-animation-duration: 10s;
}
@-webkit-keyframes name5 {
    from { }
    to { }
}
</style>
<body>
<summary>This test passes if it does not assert<div></div><slot id=slot1><div></div></slot></summary>
</body>

<script>
document.execCommand("SelectAll");
</script>
