107 lines
3.6 KiB
Markdown
107 lines
3.6 KiB
Markdown
---
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id: bad87fee1348bd8aedf06756
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title: Override Class Declarations by Styling ID Attributes
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challengeType: 0
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videoUrl: 'https://scrimba.com/c/cRkpDhB'
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---
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## Description
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<section id='description'>
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We just proved that browsers read CSS from top to bottom in order of their declaration. That means that, in the event of a conflict, the browser will use whichever CSS declaration came last. Notice that if we even had put <code>blue-text</code> before <code>pink-text</code> in our <code>h1</code> element's classes, it would still look at the declaration order and not the order of their use!
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But we're not done yet. There are other ways that you can override CSS. Do you remember id attributes?
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Let's override your <code>pink-text</code> and <code>blue-text</code> classes, and make your <code>h1</code> element orange, by giving the <code>h1</code> element an id and then styling that id.
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</section>
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## Instructions
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<section id='instructions'>
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Give your <code>h1</code> element the <code>id</code> attribute of <code>orange-text</code>. Remember, id styles look like this:
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<code><h1 id="orange-text"></code>
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Leave the <code>blue-text</code> and <code>pink-text</code> classes on your <code>h1</code> element.
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Create a CSS declaration for your <code>orange-text</code> id in your <code>style</code> element. Here's an example of what this looks like:
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```css
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#brown-text {
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color: brown;
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}
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```
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<strong>Note:</strong> It doesn't matter whether you declare this CSS above or below pink-text class, since id attribute will always take precedence.
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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: Your <code>h1</code> element should have the class <code>pink-text</code>.
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testString: assert($("h1").hasClass("pink-text"), 'Your <code>h1</code> element should have the class <code>pink-text</code>.');
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- text: Your <code>h1</code> element should have the class <code>blue-text</code>.
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testString: assert($("h1").hasClass("blue-text"), 'Your <code>h1</code> element should have the class <code>blue-text</code>.');
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- text: Give your <code>h1</code> element the id of <code>orange-text</code>.
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testString: assert($("h1").attr("id") === "orange-text", 'Give your <code>h1</code> element the id of <code>orange-text</code>.');
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- text: There should be only one <code>h1</code> element.
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testString: assert(($("h1").length === 1), 'There should be only one <code>h1</code> element.');
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- text: Create a CSS declaration for your <code>orange-text</code> id
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testString: assert(code.match(/#orange-text\s*{/gi), 'Create a CSS declaration for your <code>orange-text</code> id');
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- text: Do not give your <code>h1</code> any <code>style</code> attributes.
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testString: assert(!code.match(/<h1.*style.*>/gi), 'Do not give your <code>h1</code> any <code>style</code> attributes.');
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- text: Your <code>h1</code> element should be orange.
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testString: assert($("h1").css("color") === "rgb(255, 165, 0)", 'Your <code>h1</code> element should be orange.');
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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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<style>
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body {
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background-color: black;
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font-family: monospace;
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color: green;
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}
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.pink-text {
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color: pink;
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}
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.blue-text {
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color: blue;
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}
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</style>
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<h1 class="pink-text blue-text">Hello World!</h1>
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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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```html
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<style>
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body {
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background-color: black;
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font-family: monospace;
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color: green;
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}
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.pink-text {
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color: pink;
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}
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.blue-text {
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color: blue;
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}
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#orange-text {
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color: orange;
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}
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</style>
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<h1 id="orange-text" class="pink-text blue-text">Hello World!</h1>
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```
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</section>
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