123 lines
4.1 KiB
Markdown
123 lines
4.1 KiB
Markdown
---
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id: bad87dee1348bd9aede07836
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title: Use an id Attribute to Style an Element
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challengeType: 0
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videoUrl: 'https://scrimba.com/c/cakyZfL'
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---
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## Description
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<section id='description'>
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One cool thing about <code>id</code> attributes is that, like classes, you can style them using CSS.
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However, an <code>id</code> is not reusable and should only be applied to one element. An <code>id</code> also has a higher specificity (importance) than a class so if both are applied to the same element and have conflicting styles, the styles of the <code>id</code> will be applied.
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Here's an example of how you can take your element with the <code>id</code> attribute of <code>cat-photo-element</code> and give it the background color of green. In your <code>style</code> element:
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<blockquote>#cat-photo-element {<br> background-color: green;<br>}</blockquote>
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Note that inside your <code>style</code> element, you always reference classes by putting a <code>.</code> in front of their names. You always reference ids by putting a <code>#</code> in front of their names.
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</section>
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## Instructions
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<section id='instructions'>
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Try giving your form, which now has the <code>id</code> attribute of <code>cat-photo-form</code>, a green background.
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: Give your <code>form</code> element the id of <code>cat-photo-form</code>.
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testString: 'assert($("form").attr("id") === "cat-photo-form", "Give your <code>form</code> element the id of <code>cat-photo-form</code>.");'
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- text: Your <code>form</code> element should have the <code>background-color</code> of green.
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testString: 'assert($("#cat-photo-form").css("background-color") === "rgb(0, 128, 0)", "Your <code>form</code> element should have the <code>background-color</code> of green.");'
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- text: Make sure your <code>form</code> element has an <code>id</code> attribute.
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testString: 'assert(code.match(/<form.*cat-photo-form.*>/gi) && code.match(/<form.*cat-photo-form.*>/gi).length > 0, "Make sure your <code>form</code> element has an <code>id</code> attribute.");'
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- text: Do not give your <code>form</code> any <code>class</code> or <code>style</code> attributes.
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testString: 'assert(!code.match(/<form.*style.*>/gi) && !code.match(/<form.*class.*>/gi), "Do not give your <code>form</code> any <code>class</code> or <code>style</code> attributes.");'
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='html-seed'>
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```html
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<link href="https://fonts.googleapis.com/css?family=Lobster" rel="stylesheet" type="text/css">
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<style>
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.red-text {
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color: red;
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}
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h2 {
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font-family: Lobster, monospace;
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}
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p {
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font-size: 16px;
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font-family: monospace;
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}
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.thick-green-border {
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border-color: green;
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border-width: 10px;
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border-style: solid;
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border-radius: 50%;
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}
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.smaller-image {
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width: 100px;
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}
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.silver-background {
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background-color: silver;
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}
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</style>
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<h2 class="red-text">CatPhotoApp</h2>
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<main>
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<p class="red-text">Click here to view more <a href="#">cat photos</a>.</p>
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<a href="#"><img class="smaller-image thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
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<div class="silver-background">
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<p>Things cats love:</p>
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<ul>
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<li>cat nip</li>
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<li>laser pointers</li>
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<li>lasagna</li>
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</ul>
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<p>Top 3 things cats hate:</p>
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<ol>
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<li>flea treatment</li>
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<li>thunder</li>
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<li>other cats</li>
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</ol>
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</div>
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<form action="/submit-cat-photo" id="cat-photo-form">
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<label><input type="radio" name="indoor-outdoor" checked> Indoor</label>
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<label><input type="radio" name="indoor-outdoor"> Outdoor</label><br>
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<label><input type="checkbox" name="personality" checked> Loving</label>
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<label><input type="checkbox" name="personality"> Lazy</label>
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<label><input type="checkbox" name="personality"> Energetic</label><br>
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<input type="text" placeholder="cat photo URL" required>
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<button type="submit">Submit</button>
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</form>
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</main>
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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// solution required
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```
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</section>
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