5.9 KiB
5.9 KiB
id | title | challengeType | videoUrl | localeTitle |
---|---|---|---|---|
587d778d367417b2b2512aaa | Make Elements Only Visible to a Screen Reader by Using Custom CSS | 0 | Tornar os elementos visíveis apenas para um leitor de tela usando CSS personalizado |
Description
.sr-only {Nota
posição: absoluta;
esquerda: -10000px;
largura: 1px;
altura: 1px;
top: auto;
estouro: oculto;
}
As seguintes abordagens CSS NÃO farão o mesmo:
-
display: none;
ouvisibility: hidden;
oculta conteúdo para todos, incluindo usuários de leitores de tela - Valores zero para tamanhos de pixel, como
width: 0px; height: 0px;
remove esse elemento do fluxo do seu documento, o que significa que os leitores de tela o ignoram
Instructions
sr-only
, mas as regras CSS ainda não foram preenchidas. Atribua à position
um valor absoluto, a left
um valor de -10000px e a width
e a height
ambos os valores de 1px. Tests
tests:
- text: Seu código deve definir a propriedade de <code>position</code> da classe <code>sr-only</code> para um valor absoluto.
testString: 'assert($(".sr-only").css("position") == "absolute", "Your code should set the <code>position</code> property of the <code>sr-only</code> class to a value of absolute.");'
- text: Seu código deve definir a propriedade <code>left</code> da classe <code>sr-only</code> para um valor de -10000px.
testString: 'assert($(".sr-only").css("left") == "-10000px", "Your code should set the <code>left</code> property of the <code>sr-only</code> class to a value of -10000px.");'
- text: Seu código deve definir a propriedade <code>width</code> da classe <code>sr-only</code> para um valor de 1 pixel.
testString: 'assert(code.match(/width:\s*?1px/gi), "Your code should set the <code>width</code> property of the <code>sr-only</code> class to a value of 1 pixel.");'
- text: Seu código deve definir a propriedade <code>height</code> da classe <code>sr-only</code> para um valor de 1 pixel.
testString: 'assert(code.match(/height:\s*?1px/gi), "Your code should set the <code>height</code> property of the <code>sr-only</code> class to a value of 1 pixel.");'
Challenge Seed
<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>
<!-- Stacked bar chart of weekly training-->
<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>
Solution
// solution required