| <!doctype html> | |
| <link rel=help href="https://bugzilla.mozilla.org/show_bug.cgi?id=1741491"> | |
| <script> | |
| class CustomElement0 extends HTMLElement { | |
| constructor () { | |
| super() | |
| } | |
| static get observedAttributes () { return ["style"] } | |
| async attributeChangedCallback () { | |
| const animation = this.animate([{ | |
| "boxShadow": "none", | |
| "visibility": "collapse" | |
| }], 1957) | |
| animation.commitStyles() | |
| } | |
| } | |
| customElements.define("custom-element-0", CustomElement0) | |
| window.addEventListener("load", () => { | |
| const custom = document.createElement("custom-element-0") | |
| document.documentElement.appendChild(custom) | |
| custom.style.fontFamily = "family_name_0" | |
| }) | |
| </script> |