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index.html
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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Web Accessibility</title>
<!-- <link rel="stylesheet" href="dist/reset.css"> -->
<!-- <link rel="stylesheet" href="dist/reveal.css"> -->
<!-- <link rel="stylesheet" href="plugin/accessibility/helper.css"> -->
<!-- <link rel="stylesheet" href="dist/theme/white.css"> -->
<!-- <link rel="stylesheet" href="dist/theme/cookies.css"> -->
<style>
:root{
--body-background: #fafafa;
--accent: #DD3739;
--copy: #222;
}
@media (prefers-color-scheme: dark) {
:root body:not(.reveal-viewport) {
--body-background: #191919;
--accent: #FF676A;
--copy: #fcfcfc;
}
}
* {
box-sizing: border-box;
}
html,
body {
height: 100%;
background-color: var(--body-background);
color: var(--copy)
}
body {
margin: 0;
display: grid;
grid-template-rows: 1fr auto;
font-family: sans-serif;
}
img {
max-width: 100%;
height: auto;
}
:focus {
outline: solid 0.125rem var(--accent);
outline-offset: 0.125rem;
}
:focus:not(:focus-visible) {
outline: none;
}
.visually-hidden {
/* https://github.com/twbs/bootstrap/blob/main/scss/mixins/_visually-hidden.scss */
position: absolute !important;
width: 1px !important;
height: 1px !important;
padding: 0 !important;
margin: -1px !important; /* Fix for https://github.com/twbs/bootstrap/issues/25686 */
overflow: hidden !important;
clip: rect(0, 0, 0, 0) !important;
white-space: nowrap !important;
border: 0 !important;
}
a {
display: inline-block;
color: var(--accent);
}
a:hover {
transform: translateY(-0.0675rem);
text-decoration: none;
}
a:active {
transform: translateY(0.125rem);
text-decoration: underline;
}
/**
* Reset button styles.
* https://fvsch.com/styling-buttons
*/
button {
padding: 0;
border: none;
font: inherit;
color: inherit;
background-color: transparent;
/* show a hand cursor on hover; some argue that we
should keep the default arrow cursor for buttons */
cursor: pointer;
}
footer {
position: relative;
background: linear-gradient(var(--accent), var(--accent));
background-repeat: no-repeat;
background-size: 100% 1.75rem;
background-position: center bottom;
padding-left: 1rem;
padding-right: 1rem;
}
.chq-cookies-link {
display: inline-block;
}
.chq-cookies-link img {
font-size: 1.1rem;
padding:0.375em;
width: 3.125em;
height: auto;
background-color: var(--accent);
border-radius: 9999px;
border: solid 0.25em var(--body-background)
}
.reveal {
/* overflow: auto;
-webkit-overflow-scrolling: touch; */
/* To position the controls */
position: relative;
}
.slides {
position: absolute;
top :0;
left: 0;
right: 0;
bottom: 0;
height: 100%;
width: 100%;
overflow: auto;
-webkit-overflow-scrolling: touch;
}
.slides > * {
overflow: hidden;
}
body:not(.reveal-viewport) .slides > * + * {
border-top: solid 0.0675rem lightgrey;
border-bottom: solid 0.0675rem transparent;
}
.reveal-viewport .slides,
.slides > * {
display: grid !important;
grid-template-rows: 100%;
grid-template-columns: 100%;
place-items: center;
width: 100%;
min-height: 100%;
}
.reveal-viewport .past,
.reveal-viewport .future {
display: none !important;
}
.reveal-viewport .slides > * {
grid-column-start: 1;
grid-row-start: 1;
}
.reveal-viewport footer {
margin-top: -1.75rem;
}
.slides section {
padding: 1.5%;
width: 100%;
min-height: 100%;
}
@media (min-width: 768px) {
.split {
display: grid;
grid-template-columns: auto auto;
grid-auto-columns: auto;
align-items: stretch;
gap: 3%;
}
.split--align-top {
align-items: flex-start;
}
.split > * {
flex: 1 1 0%;
display: flex;
flex-direction: column;
justify-content: center;
max-width: 45vw
}
.split > * + * {
margin-top: 0;
}
}
/* Custom slides layout */
.slide--image {
width: 100%;
height: 100%;
overflow: hidden;
place-items: stretch center;
grid-template-rows: auto 1fr;
}
.slide--image > * {
overflow: hidden;
}
.slide--image img {
max-width: 100%;
max-height: 100%;
object-fit: contain;
}
.slide--context img {
width: 90%;
height: 90%;
}
@media (max-width: 767px) {
.slide--context {
display: block !important;
}
}
/* Reveal.js styles */
.navigate-left,
.navigate-right {
width: 3rem;
height: 3rem;
background-repeat: no-repeat;
background-position: bottom center;
background-size: 1.5em 1.5em;
}
.navigate-left:disabled,
.navigate-right:disabled {
opacity: 0.33;
}
.navigate-left {
background-image: url(images/fontawesome/chevron-left-solid.svg);
}
.navigate-right {
background-image: url(images/fontawesome/chevron-right-solid.svg);
}
.reveal .fragment:not(.visible) {
visibility: hidden;
}
.slide-number {
position: absolute;
top: 100%;
left: 5rem;
margin-top: 0.5rem;
}
.controls {
position: absolute;
top: 100%;
right: 0;
margin-top: 0.5875rem;
z-index: 2;
}
.controls > * + * {
margin-left: 0.5rem;
}
.navigate-up,
.navigate-down,
.progress,
.pause-overlay,
.speaker-notes {
display: none;
}
/* Fluid type scale courtesy of utopia.fyi */
/* @link https://utopia.fyi/type/calculator?c=320,21,1.2,1140,24,1.25,5,2,768&s=0.75|0.5|0.25,1.5|2|3|4|6,s-l */
:root {
--fluid-min-width: 320;
--fluid-max-width: 1140;
--fluid-screen: 100vw;
--fluid-bp: calc(
(var(--fluid-screen) - var(--fluid-min-width) / 16 * 1rem) /
(var(--fluid-max-width) - var(--fluid-min-width))
);
}
@media screen and (min-width: 1140px) {
:root {
--fluid-screen: calc(var(--fluid-max-width) * 1px);
}
}
:root {
--f--2-min: 14.58;
--f--2-max: 15.36;
--step--2: calc(
((var(--f--2-min) / 16) * 1rem) + (var(--f--2-max) - var(--f--2-min)) *
var(--fluid-bp)
);
--f--1-min: 17.50;
--f--1-max: 19.20;
--step--1: calc(
((var(--f--1-min) / 16) * 1rem) + (var(--f--1-max) - var(--f--1-min)) *
var(--fluid-bp)
);
--f-0-min: 21.00;
--f-0-max: 24.00;
--step-0: calc(
((var(--f-0-min) / 16) * 1rem) + (var(--f-0-max) - var(--f-0-min)) *
var(--fluid-bp)
);
--f-1-min: 25.20;
--f-1-max: 30.00;
--step-1: calc(
((var(--f-1-min) / 16) * 1rem) + (var(--f-1-max) - var(--f-1-min)) *
var(--fluid-bp)
);
--f-2-min: 30.24;
--f-2-max: 37.50;
--step-2: calc(
((var(--f-2-min) / 16) * 1rem) + (var(--f-2-max) - var(--f-2-min)) *
var(--fluid-bp)
);
--f-3-min: 36.29;
--f-3-max: 46.88;
--step-3: calc(
((var(--f-3-min) / 16) * 1rem) + (var(--f-3-max) - var(--f-3-min)) *
var(--fluid-bp)
);
--f-4-min: 43.55;
--f-4-max: 58.59;
--step-4: calc(
((var(--f-4-min) / 16) * 1rem) + (var(--f-4-max) - var(--f-4-min)) *
var(--fluid-bp)
);
--f-5-min: 52.25;
--f-5-max: 73.24;
--step-5: calc(
((var(--f-5-min) / 16) * 1rem) + (var(--f-5-max) - var(--f-5-min)) *
var(--fluid-bp)
);
}
.step--2 {font-size: var(--step--2)}
.step--1 {font-size: var(--step--1)}
.step-0 {font-size: var(--step-0)}
.step-1 {font-size: var(--step-1)}
.step-2 {font-size: var(--step-2)}
.step-3 {font-size: var(--step-3)}
.step-4 {font-size: var(--step-4)}
.step-5 {font-size: var(--step-5)}
.slides {
font-size: var(--step-2);
text-align: center;
line-height: 1.25
}
ul,
ol {
padding-left: 1.5em;
}
ul,
ol,
.text-left{
text-align: left;
}
h1,h2,h3,h4 {
font-size: var(--step-5);
}
@media (max-width: 767px) {
.slides {
font-size: var(--step-1);
}
h1,h2,h3,h4 {
font-size: var(--step-3);
}
}
blockquote {
line-height: 1.5;
max-width: 75%;
margin-left:auto;
margin-right: auto;
border: solid 1px light-grey;
font-size: var(--step--1)
}
blockquote p {
font-size: var(--step-0)
}
@media (min-width: 768px) {
blockquote {
font-size: var(--step-1)
}
blockquote p {
font-size: var(--step-2)
}
}
/* Spacing */
h1,
h2,
h3,
h4,
p,
ul,
ol {
margin: 0;
}
h1 + *,
h2 + *,
h3 + *,
h4 + *,
p + *,
* + p,
* + ul,
* + ol,
ul > * + *,
ol > * + * {
margin-top: 1em;
}
* + .no-margin-before,
.no-margin-after + * {
margin-top: 0;
}
* + .small-margin-before {
margin-top: 0.5em;
}
* + .large-margin-before {
margin-top: 2em;
}
.centered--table {
display: table;
margin-left: auto;
margin-right: auto;
}
.display-block{
display: block;
}
</style>
<!-- Printing and PDF exports -->
<script>
var link = document.createElement('link');
link.rel = 'stylesheet';
link.type = 'text/css';
link.href = window.location.search.match(/print-pdf/gi) ? 'css/print/pdf.css' : 'css/print/paper.css';
document.getElementsByTagName('head')[0].appendChild(link);
</script>
</head>
<body>
<main class="reveal">
<div class="slides">
<section>
<div>
<svg aria-hidden="true" focusable="false"
role="presentation" width="128" height="128"
viewBox="0 0 512 512">
<path fill="currentColor"
d="M256 48c114.953 0 208 93.029 208 208 0 114.953-93.029 208-208 208-114.953 0-208-93.029-208-208 0-114.953 93.029-208 208-208m0-40C119.033 8 8 119.033 8 256s111.033 248 248 248 248-111.033 248-248S392.967 8 256 8zm0 56C149.961 64 64 149.961 64 256s85.961 192 192 192 192-85.961 192-192S362.039 64 256 64zm0 44c19.882 0 36 16.118 36 36s-16.118 36-36 36-36-16.118-36-36 16.118-36 36-36zm117.741 98.023c-28.712 6.779-55.511 12.748-82.14 15.807.851 101.023 12.306 123.052 25.037 155.621 3.617 9.26-.957 19.698-10.217 23.315-9.261 3.617-19.699-.957-23.316-10.217-8.705-22.308-17.086-40.636-22.261-78.549h-9.686c-5.167 37.851-13.534 56.208-22.262 78.549-3.615 9.255-14.05 13.836-23.315 10.217-9.26-3.617-13.834-14.056-10.217-23.315 12.713-32.541 24.185-54.541 25.037-155.621-26.629-3.058-53.428-9.027-82.141-15.807-8.6-2.031-13.926-10.648-11.895-19.249s10.647-13.926 19.249-11.895c96.686 22.829 124.283 22.783 220.775 0 8.599-2.03 17.218 3.294 19.249 11.895 2.029 8.601-3.297 17.219-11.897 19.249z" />
</svg>
<h1 class="mt-3">It takes everyone <br>to build for everyone</h1>
</div>
</section>
<section>
<div>
<h2>Slides are online</h2>
<p class="no-margin-before">With links</p>
<a href="https://cookieshq.github.io/a11y-sc-2021/" class="step-3">https://<wbr>cookieshq<wbr>.github.io<wbr>/a11y-sc-2021/</a>
</div>
</section>
<section>
<div>
<h2>A web in a sad state</h2>
<div class="split split--align-top">
<p><strong class="step-4">1 Million</strong></span><br>homepages</p>
<p class="no-margin-before"><strong class="step-4">97.4%</strong><br> with errors</p>
</div>
<p>Source: <a href="https://webaim.org/projects/million/#errors">The WebAIM Million 2021</a></p>
</div>
</section>
<section>
<div>
<h3>Design and content barriers</h3>
<ul class="centered--table">
<li>Convoluted UX</li>
<li>Distracting elements</li>
<li>Lack of captioning</li>
<li>…</li>
</ul>
</div>
</section>
<section>
<div>
<h3>
This excludes people!
</h3>
<blockquote>
“We don't care about your needs”
</blockquote>
</div>
</section>
<section>
<h3>It's just <span role="presentation">💩</span><span class="visually-hidden">crap</span>!</h3>
</section>
<section>
<div>
<div class="split">
<div>
<h2>
<span class="display-block step-2">When</span>
"It's the right thing to do"
<span class="display-block step-2">is not enough...</span></h2>
</div>
<ul>
<li>It helps everyone</li>
<li><a
href="https://www.gov.uk/government/statistics/family-resources-survey-financial-year-2019-to-2020/family-resources-survey-financial-year-2019-to-2020#disability-1">22%
of the UK population</a></li>
<li><a href="https://www.w3.org/WAI/policies/">Legal requirements</a></li>
</ul>
</div>
<p class="step-1 large-margin-before">More arguments: <a href="https://www.w3.org/WAI/business-case/">Business case for digital accessibility</a></p>
</div>
</section>
<section>
<div>
<h3>
<span role="presentation">💰💰💰</span><br />
It makes business sense
</h3>
<blockquote class="w-100 twitter-tweet">
<p lang="en" dir="ltr">Note on the <a href="https://twitter.com/HelloFreshUK?ref_src=twsrc%5Etfw">@HelloFreshUK</a>
site: "If you are using a screen reader and are having problems using this website, please call
020... for
assistance". I do use a screen reader, I did have problems, I will not be calling, because your
nearest
competitor has a more accessible site...</p>— Léonie (@LeonieWatson) <a
href="https://twitter.com/LeonieWatson/status/1079442892672942080?ref_src=twsrc%5Etfw">December 30,
2018</a>
</blockquote>
</div>
</section>
<section>
<div>
<h3>No silver bullet</h3>
<p>“Not so magic” <a href="https://overlayfactsheet.com">accessibility overlays</a></p>
<p>Artificial intelligence not quite there yet</p>
</div>
</section>
<section>
<h2>Project management <br> Sales</h2>
</section>
<section>
<div>
<h3>Defend a baseline</h3>
<ul class="rythm-2">
<li>Push back against removal</li>
<li>Not an “add-on”</li>
<li>Requirements & bugs</li>
</ul>
</div>
</section>
<section>
<h3>
<span role="presentation" aria-hidden="true">🤔</span>
Figuring out what to do
</h3>
</section>
<section>
<div>
<h3>Involve<br> disabled users</h3>
<p>They know best the barriers they face.</p>
<ul>
<li>Especially if innovating</li>
<li>Compensate them fairly</li>
</ul>
</div>
</section>
<section>
<div>
<h3>Follow<br> best practices</h3>
<a class="step-3 text-left" href="https://www.w3.org/WAI/WCAG21/quickref/">
<strong>W</strong>eb<br />
<strong>C</strong>ontent<br />
<strong>A</strong>ccessibility<br />
<strong>G</strong>uidelines
</a>
<p>Referenced in many legislation.</p>
</div>
</section>
<section>
<h2>Design</h2>
</section>
<section>
<div class="split">
<h3>Layout</h3>
<ul >
<li>Structured & consistent</li>
<li>Good size & spacing<br> (text & controls)</li>
<li>Responsive & ready for zoom</li>
</ul>
</div>
</section>
<section>
<div class="split">
<h3>Appearance</h3>
<ul >
<li><a href="https://uxdesign.cc/testing-fonts-for-accessibility-817f47011078">Choice of fonts</a></li>
<li>Not just colour</li>
<li><a href="https://www.a11yproject.com/posts/2015-01-05-what-is-color-contrast/">Enough contrast</a></li>
</ul>
</div>
</section>
<section class="slide--image">
<h4>Contrasted, not boring</h4>
<a href="https://tatianamac.com/">
<img src="images/tatianamac.png"
alt="Screenshot of Tatiana Mac's website, showing good contrast yet using bold colors like a very bright pink" />
</a>
</section>
<section>
<div class="split">
<h3>Interactions</h3>
<ul>
<li><a href="https://www.w3.org/WAI/WCAG21/Understanding/keyboard.html#dfn-process">Keyboard first</a></li>
<li>Automatic changes</li>
<li><a href="https://alistapart.com/blog/post/more-resources-for-accessible-animations/">Animations</a></li>
</ul>
</div>
</section>
<section>
<h2>Content</h2>
</section>
<section>
<div class="split">
<h3>Copy</h3>
<ul >
<li>Structured and broken down</li>
<li>Meaningful labels</li>
<li>Vocabulary<br> (<a href="https://www.friendlyediting.com/assets/notsoableist/index.html#cover">ableism</a>, jargon, reading age)</li>
</ul>
</div>
</section>
<section>
<div class="split">
<h3>Media<br> alternatives</h3>
<ul >
<li>Images & graph descriptions</li>
<li>Audio transcripts</li>
<li>Closed captions for video</li>
</ul>
</div>
</section>
<section class="slide--context">
<div>
<h4 class="no-margin-after">Context matters</h4>
<div>
<div class="split">
<div>
<img src="images/jessica-weiller-GAw5wFLVWVo-unsplash.jpg" alt="A pictue of a red panda"
longdesc="Its meaning, and so its alternative text, will depend on which website it is shown" />
</div>
<ol class="rythm-2">
<li>Nothing</li>
<li>"Such a cute red panda crouching over a trunk!"</li>
<li>"Crouching on a trunk, what will that red panda do next?"</li>
</ol>
</div>
<p class="step-1">Resources: <a href="https://www.w3.org/WAI/tutorials/images/decision-tree/">Alt text decision tree</a>, <a href="https://mobile.twitter.com/whykristenburns/status/1391108176695726085">Composing alternative text</a></p>
</div>
</div>
</section>
<section>
<h2>Development</h2>
</section>
<section>
<div class="split">
<div>
<h3>Semantics</h3>
</div>
<ul >
<li><a href="https://developer.mozilla.org/en-US/docs/Web/HTML/Element">HTML</a> + <a href="https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA">ARIA</a></li>
<li>Headings and landmarks</li>
<li>Labelling & state</li>
</ul>
</div>
</section>
<section class="slide--image">
<h4>An example</h4>
<img src="images/screenreader.png"
alt="A screenshot of Voice Over announcing the checked 'Nutella' choice among the 3 radio buttons to answer 'What\'s your favourite cookie flavour?'" />
</section>
<section>
<div class="split">
<h3>Adaptability</h3>
<ul >
<li>Screen size</li>
<li>Orientation</li>
<li>Font size & line-height</li>
<li>Contrast, motion...</li>
</ul>
</div>
</section>
<section>
<div class="split">
<div>
<h3>Reachability</h3>
</div>
<ul >
<li>Shown can be reached</li>
<li><a href="https://kittygiraudel.com/2021/02/17/hiding-content-responsibly/">Hidden/obscured cannot</a></li>
<li>Meaningful order</li>
</ul>
</div>
</section>
<section>
<div class="split">
<h3>Interactions</h3>
<ul class="rythm-4">
<li>Focus (visibility, no trapping, before & after)</li>
<li><a href="https://www.w3.org/TR/wai-aria-practices-1.1/#aria_ex">Activation</a></li>
<li>Feedback (non only visual)</li>
</ul>
</div>
</section>
<section>
<h2>Testing</h2>
</section>
<section>
<div>
<h3>Involve disabled users</h3>
<div class="split">
<p>They know best...</p>
<p>... but should test last.</p>
</div>
</div>
</section>
<section>
<div class="split">
<h3>Manual testing</h3>
<ol >
<li><a href="https://addons.mozilla.org/en-US/firefox/user/1263919/">Headings</a> &<a href="<a href=" http://matatk.agrip.org.uk/landmarks/">Landmarks</a></li>
<li><a href="https://superhighfives.com/pika">Color contrast</a></li>
<li><a href="https://accessibility.18f.gov/keyboard/">Keyboard</a></li>
<li><a href="https://dequeuniversity.com/screenreaders/">Screenreader</a></li>
<li><a href="https://webaim.org/standards/wcag/checklist">WCAG checklist</a></li>
</ol>
</div>
</section>
<section>
<div>
<h3>Automated testing</h3>
<div class="split split--align-top">
<p><strong class="step-4">13–40%</strong><br>of errors</p>
<p><strong class="step-4">Human</strong><br> review</p>
</div>
<p>Source & list of tools:
<a href="https://alphagov.github.io/accessibility-tool-audit/">Gov.uk experiment</a></p>
</div>
</section>
<section>
<div>
<h2>Beyond <br>the website</h2>
<ul class="rythm-2">
<li>Social media<br>(alternative text, #HashtagCapitalisation)</li>
<li>Apps & documents</li>
<li>Offline</li>
</ul>
</div>
</section>
<section>
<h2>What next?</h2>
</section>
<section>
<div>
<h3>Start the journey</h3>
<p>Don't wait for permission</p>
</div>
</section>
<section>
<div>
<h3>More accessible <br />than yesterday</h3>
<p>and tomorrow more than today</p>
</div>
</section>
<section>
<div>
<h3>Involve everyone</h3>
<p>The earlier in the process the better.</p>
</div>
</section>
<section>
<div>
<h3>Learn new habits</h3>
<p>User needs, tools, techniques</p>
<ul>
<li><a href="https://www.a11yproject.com/">The A11Y project</a>,
<li><a href="https://www.getstark.co/library/">Stark's accessibility library</a>,
<li><a href="https://a11yweekly.com/issues/">A11Y weekly newsletter</a>,
<li><a href="https://webaim.org/discussion/">WebAIM discussion list</a>
</ul>
</div>
</section>
<section>
<div>
<h3>It's our responsibility</h3>
<p>to not exclude people.</p>
</div>
</section>
<section>
<div>
<h2>Thank you</h2>
<p><a href="https://twitter.com/romaricpascal">@romaricpascal</a></p>
<p class="large-margin-before"><a href="https://twitter.com/thecookieshq">@thecookieshq</a></p>
<p class="small-margin-before"><a href="mailto:hello@cookieshq.co.uk">hello@cookieshq.co.uk</a></p>
</div>
</div>
</section>
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