Use popover for hamburger navigation menu
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Helen Chong
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@ -1,6 +1,3 @@
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{# Accessible hamburger menu code based on:
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https://kalechips.net/projects/snippets/burger #}
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{% set navLinksEl %}
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{%- if tags and tags.includes("shrine pages") %}
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<li>
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@ -15,131 +12,86 @@ https://kalechips.net/projects/snippets/burger #}
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{% endset %}
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<nav class="navbar" aria-labelledby="top-level-nav-title">
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<h2 class="visually-hidden" id="top-level-nav-title">Top Level Navigation Bar</h2>
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<details class="navbar__burger">
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<summary class="navbar__toggle" id="navbar-toggle">
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<svg aria-hidden="true" width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
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<path d="M4 6H20M4 12H20M4 18H20" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
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</svg>
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<h2 class="visually-hidden" id="top-level-nav-title">Top Level</h2>
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<ul class="navbar__menu navbar__links">{{ navLinksEl | safe }}</ul>
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<button class="navbar__toggle" popovertarget="nav-menu" aria-labelledby="nav-toggle-title">
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<svg aria-hidden="true" focusable="false" width="1em" height="1em" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><!--!Font Awesome Free 6.6.0 by @fontawesome - https://fontawesome.com License - https://fontawesome.com/license/free Copyright 2024 Fonticons, Inc.--><path d="M0 96C0 78.3 14.3 64 32 64l384 0c17.7 0 32 14.3 32 32s-14.3 32-32 32L32 128C14.3 128 0 113.7 0 96zM0 256c0-17.7 14.3-32 32-32l384 0c17.7 0 32 14.3 32 32s-14.3 32-32 32L32 288c-17.7 0-32-14.3-32-32zM448 416c0 17.7-14.3 32-32 32L32 448c-17.7 0-32-14.3-32-32s14.3-32 32-32l384 0c17.7 0 32 14.3 32 32z"/></svg>
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Navigation
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</summary>
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<nav class="navbar__menu" aria-labelledby="hamburger-nav-title">
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<h3 class="visually-hidden" id="hamburger-nav-title">Hamburger Menu</h3>
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<ul class="navbar__menu--links">
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{{ navLinksEl | safe }}
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<li class="skip"><a href="#navbar-toggle">Close Menu</a></li>
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</ul>
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</nav>
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</details>
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<ul class="navbar__links">
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{{ navLinksEl | safe }}
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</ul>
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</button>
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</nav>
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<div popover id="nav-menu" class="navbar__popover">
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<ul class="navbar__menu">{{ navLinksEl | safe }}</ul>
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</div>
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{%- css %}
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:root {
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--icon-burger: url(/assets/icons/burger.svg);
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--icon-close: url(/assets/icons/close.svg);
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--sz-icon: 2.5rem;
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}
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.navbar {
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background: var(--clr-navbar-bg);
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width: 100%;
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z-index: 998;
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position: sticky;
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top: 0;
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}
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.navbar__toggle {
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color: var(--clr-navbar-link);
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font-size: 1.25rem;
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font-weight: 700;
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}
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.navbar__toggle {
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list-style-type: none;
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display: flex;
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align-items: center;
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gap: 0.3em;
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padding: 0.4em 0.6em;
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background-color: inherit;
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}
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.navbar__toggle::-webkit-details-marker { display: none; }
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.navbar__toggle:focus,
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.navbar a:focus {
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outline: 0.15em solid var(--clr-navbar-link);
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padding: 0.6em;
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}
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.navbar a:focus { outline-offset: 0.1em; }
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.navbar__menu--links,
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.navbar__links {
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list-style-type: "";
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flex-wrap: wrap;
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gap: 1em;
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.navbar__toggle {
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background-color: inherit;
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color: var(--clr-navbar-link);
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border: none;
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padding: 0;
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font-size: 1.25rem;
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font-weight: 700;
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display: flex;
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align-items: center;
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gap: 0.3em;
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}
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.navbar__menu--links a,
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.navbar__links a {
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.navbar__toggle svg { fill: currentColor; }
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.navbar__toggle:focus,
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.navbar a:focus { outline: 0.15em solid var(--clr-navbar-link); }
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.navbar__menu {
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list-style-type: "";
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margin: 0;
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padding: 0;
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display: grid;
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gap: 1.5em;
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text-align: center;
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}
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.navbar__menu a {
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color: var(--clr-navbar-link);
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text-decoration: none;
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cursor: pointer;
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display: block;
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display: inline-block;
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}
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.navbar__menu--links {
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display: flex;
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padding: 0 1em;
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.navbar__menu a:hover { color: var(--clr-link-hover); }
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.navbar__menu a:focus { outline-offset: 0.2em; }
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.navbar__links { display: none; }
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.navbar__popover {
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background-color: var(--clr-navbar-bg);
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border: 0.15em solid var(--clr-navbar-link);
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padding: 1.5em;
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width: 80%;
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}
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.skip a {
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position: absolute;
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left: -10000px;
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top: auto;
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width: 1px;
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height: 1px;
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overflow: hidden;
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.navbar__popover::backdrop {
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background-color: black;
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opacity: 0.5;
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}
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.skip a:focus {
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position: static;
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width: auto;
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height: auto;
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}
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.navbar__links {
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display: none;
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padding: 0.2em 0 0 0;
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}
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.navbar__links a:hover { color: var(--clr-link-hover); }
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.navbar__links a:focus { outline-offset: 0.2em; }
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/* Tablet screen size */
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@media only screen and (min-width: 43.75rem) {
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.navbar { padding: 0 0.6em; }
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.navbar__burger { display: none; }
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.navbar { padding: 1em 0.6em; }
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.navbar__toggle { display: none; }
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.navbar__links {
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display: flex;
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justify-content: space-evenly;
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gap: 0.5em;
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padding: 0;
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}
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}
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{% endcss %}
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{%- js %}
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const navbarBurger = document.querySelector(".navbar__burger");
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navbarBurger.addEventListener("keydown", (event) => {
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if (event.key == "Escape") {
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navbarBurger.removeAttribute("open");
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navbarBurger.ariaExpanded = false;
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document.querySelector(".navbar__toggle").focus();
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}
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});
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{% endjs %}
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@ -81,8 +81,6 @@ blockquote > * + :not([class]),
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.c-blockquote__attribution { margin-top: var(--sz-paragraph-margin); }
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button:hover { cursor: pointer; }
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button:focus,
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details:focus { outline-offset: 0.2em; }
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figure {
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@ -1,7 +1,7 @@
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---
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title: Colophon
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keyword: colophon page
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updated: 2024-07-18
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updated: 2024-07-20
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toc: true
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eleventyNavigation:
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order: 14
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@ -54,7 +54,6 @@ Due to this website being a static site, JavaScript is used to create dynamic an
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* [{% cite "Star Wars: Knights of the Old Republic" %}](/shrines/starwarskotor)
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* [{% cite "Cassette Beasts" %}](/shrines/cassettebeasts)
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* Birthdays of characters from {% cite "A Summer’s End — Hong Kong 1986" %} on its shrine.
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* When this site is viewed on mobile devices, the navigation bar's hamburger menu uses JavaScript to enable using the Escape key to close the navigation manu.
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* Scott O'Hara's [ARIA Tooltips](https://github.com/scottaohara/a11y_tooltips) script is used to implement accessible tooltips that meet Web Content Accessibility Guidelines (WCAG) 2.2 success criterion for [1.4.13: Content on Hover or Focus (Level AA)](https://www.w3.org/WAI/WCAG22/Understanding/content-on-hover-or-focus.html), by allowing visitors to see tooltips on keyboard focus and dismiss tooltips by pressing the Escape key.
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* Zach Leatherman's [details-utils](https://www.npmjs.com/package/@zachleat/details-utils) JavaScript package is used to automatically expand sidebar table of contents on wide screens.
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* [status.cafe](https://status.cafe/) widget, which is placed on the home page, uses JavaScript to fetch data of my latest status update.
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