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---
id: 587d778d367417b2b2512aaa
title: Make Elements Only Visible to a Screen Reader by Using Custom CSS
challengeType: 0
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videoUrl: 'https://scrimba.com/c/cJ8QGkhJ'
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forumTopicId: 301020
2021-01-13 03:31:00 +01:00
dashedName: make-elements-only-visible-to-a-screen-reader-by-using-custom-css
2018-09-30 23:01:58 +01:00
---
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# --description--
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Have you noticed that all of the applied accessibility challenges so far haven't used any CSS? This shows the importance of using a logical document outline and semantically meaningful tags around your content before introducing the visual design aspect.
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However, CSS's magic can also improve accessibility on your page when you want to visually hide content meant only for screen readers. This happens when information is in a visual format (like a chart), but screen reader users need an alternative presentation (like a table) to access the data. CSS is used to position the screen reader-only elements off the visual area of the browser window.
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Here's an example of the CSS rules that accomplish this:
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```css
.sr-only {
position: absolute;
left: -10000px;
width: 1px;
height: 1px;
top: auto;
overflow: hidden;
}
```
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**Note:** The following CSS approaches will NOT do the same thing:
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<ul>
<li><code>display: none;</code> or <code>visibility: hidden;</code> hides content for everyone, including screen reader users</li>
<li>Zero values for pixel sizes, such as <code>width: 0px; height: 0px;</code> removes that element from the flow of your document, meaning screen readers will ignore it</li>
</ul>
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# --instructions--
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Camper Cat created a really cool stacked bar chart for his training page, and put the data into a table for his visually impaired users. The table already has an `sr-only` class, but the CSS rules aren't filled in yet. Give the `position` an `absolute` value, the `left` a `-10000px` value, and the `width` and `height` both `1px` values.
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# --hints--
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Your code should set the `position` property of the `sr-only` class to a value of `absolute` .
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```js
assert($('.sr-only').css('position') == 'absolute');
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```
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Your code should set the `left` property of the `sr-only` class to a value of `-10000px` .
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```js
assert($('.sr-only').css('left') == '-10000px');
```
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Your code should set the `width` property of the `sr-only` class to a value of `1` pixel.
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```js
assert(code.match(/width:\s*?1px/gi));
```
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Your code should set the `height` property of the `sr-only` class to a value of `1` pixel.
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```js
assert(code.match(/height:\s*?1px/gi));
```
# --seed--
## --seed-contents--
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```html
<head>
<style>
.sr-only {
position: ;
left: ;
width: ;
height: ;
top: auto;
overflow: hidden;
}
</style>
</head>
<body>
<header>
<h1>Training</h1>
<nav>
<ul>
<li><a href="#stealth ">Stealth & Agility</a></li>
<li><a href="#combat ">Combat</a></li>
<li><a href="#weapons ">Weapons</a></li>
</ul>
</nav>
</header>
<section>
<h2>Master Camper Cat's Beginner Three Week Training Program</h2>
<figure>
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<!-- Stacked bar chart of weekly training -->
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<p>[Stacked bar chart]</p>
<br />
<figcaption>Breakdown per week of time to spend training in stealth, combat, and weapons.</figcaption>
</figure>
<table class="sr-only">
<caption>Hours of Weekly Training in Stealth, Combat, and Weapons</caption>
<thead>
<tr>
<th></th>
<th scope="col">Stealth & Agility</th>
<th scope="col">Combat</th>
<th scope="col">Weapons</th>
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<th scope="col">Total</th>
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</tr>
</thead>
<tbody>
<tr>
<th scope="row">Week One</th>
<td>3</td>
<td>5</td>
<td>2</td>
<td>10</td>
</tr>
<tr>
<th scope="row">Week Two</th>
<td>4</td>
<td>5</td>
<td>3</td>
<td>12</td>
</tr>
<tr>
<th scope="row">Week Three</th>
<td>4</td>
<td>6</td>
<td>3</td>
<td>13</td>
</tr>
</tbody>
</table>
</section>
<section id="stealth">
<h2>Stealth & Agility Training</h2>
<article><h3>Climb foliage quickly using a minimum spanning tree approach</h3></article>
<article><h3>No training is NP-complete without parkour</h3></article>
</section>
<section id="combat">
<h2>Combat Training</h2>
<article><h3>Dispatch multiple enemies with multithreaded tactics</h3></article>
<article><h3>Goodbye, world: 5 proven ways to knock out an opponent</h3></article>
</section>
<section id="weapons">
<h2>Weapons Training</h2>
<article><h3>Swords: the best tool to literally divide and conquer</h3></article>
<article><h3>Breadth-first or depth-first in multi-weapon training?</h3></article>
</section>
<footer>© 2018 Camper Cat</footer>
</body>
```
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# --solutions--
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```html
<head>
<style>
.sr-only {
position: absolute;
left: -10000px;
width: 1px;
height: 1px;
top: auto;
overflow: hidden;
}
</style>
</head>
<body>
<header>
<h1>Training</h1>
<nav>
<ul>
<li><a href="#stealth ">Stealth & Agility</a></li>
<li><a href="#combat ">Combat</a></li>
<li><a href="#weapons ">Weapons</a></li>
</ul>
</nav>
</header>
<section>
<h2>Master Camper Cat's Beginner Three Week Training Program</h2>
<figure>
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<!-- Stacked bar chart of weekly training -->
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<p>[Stacked bar chart]</p>
<br />
<figcaption>Breakdown per week of time to spend training in stealth, combat, and weapons.</figcaption>
</figure>
<table class="sr-only">
<caption>Hours of Weekly Training in Stealth, Combat, and Weapons</caption>
<thead>
<tr>
<th></th>
<th scope="col">Stealth & Agility</th>
<th scope="col">Combat</th>
<th scope="col">Weapons</th>
<th scope="col">Total</th>
</tr>
</thead>
<tbody>
<tr>
<th scope="row">Week One</th>
<td>3</td>
<td>5</td>
<td>2</td>
<td>10</td>
</tr>
<tr>
<th scope="row">Week Two</th>
<td>4</td>
<td>5</td>
<td>3</td>
<td>12</td>
</tr>
<tr>
<th scope="row">Week Three</th>
<td>4</td>
<td>6</td>
<td>3</td>
<td>13</td>
</tr>
</tbody>
</table>
</section>
<section id="stealth">
<h2>Stealth & Agility Training</h2>
<article><h3>Climb foliage quickly using a minimum spanning tree approach</h3></article>
<article><h3>No training is NP-complete without parkour</h3></article>
</section>
<section id="combat">
<h2>Combat Training</h2>
<article><h3>Dispatch multiple enemies with multithreaded tactics</h3></article>
<article><h3>Goodbye, world: 5 proven ways to knock out an opponent</h3></article>
</section>
<section id="weapons">
<h2>Weapons Training</h2>
<article><h3>Swords: the best tool to literally divide and conquer</h3></article>
<article><h3>Breadth-first or depth-first in multi-weapon training?</h3></article>
</section>
<footer>© 2018 Camper Cat</footer>
</body>
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```
