freeCodeCamp/curriculum/challenges/english/01-responsive-web-design/basic-css/use-css-selectors-to-style-elements.english.md

---
id: bad87fee1348bd9aedf08805
title: Use CSS Selectors to Style Elements
challengeType: 0
videoUrl: 'https://scrimba.com/c/cJKMBT2'
forumTopicId: 18349
---

## Description
<section id='description'>
With CSS, there are hundreds of CSS properties that you can use to change the way an element looks on your page.
When you entered <code>&#60;h2 style="color: red;"&#62;CatPhotoApp&#60;/h2&#62;</code>, you were styling that individual <code>h2</code> element with inline CSS, which stands for Cascading Style Sheets.
That's one way to specify the style of an element, but there's a better way to apply CSS.
At the top of your code, create a <code>style</code> block like this:

```html
<style>
</style>
```

Inside that style block, you can create a <dfn>CSS selector</dfn> for all <code>h2</code> elements. For example, if you wanted all <code>h2</code> elements to be red, you would add a style rule that looks like this:

```html
<style>
  h2 {
    color: red;
  }
</style>
```

Note that it's important to have both opening and closing curly braces (<code>{</code> and <code>}</code>) around each element's style rule(s). You also need to make sure that your element's style definition is between the opening and closing style tags. Finally, be sure to add a semicolon to the end of each of your element's style rules.
</section>

## Instructions
<section id='instructions'>
Delete your <code>h2</code> element's style attribute, and instead create a CSS <code>style</code> block. Add the necessary CSS to turn all <code>h2</code> elements blue.
</section>

## Tests
<section id='tests'>

```yml
tests:
  - text: The style attribute should be removed from your <code>h2</code> element.
    testString: assert(!$("h2").attr("style"));
  - text: You should create a <code>style</code> element.
    testString: assert($("style") && $("style").length >= 1);
  - text: Your <code>h2</code> element should be blue.
    testString: assert($("h2").css("color") === "rgb(0, 0, 255)");
  - text: Your stylesheet <code>h2</code> declaration should be valid with a semicolon and closing brace.
    testString: assert(code.match(/h2\s*\{\s*color\s*:.*;\s*\}/g));
  - text: All your <code>style</code> elements should be valid and have closing tags.
    testString: assert(code.match(/<\/style>/g) && code.match(/<\/style>/g).length === (code.match(/<style((\s)*((type|media|scoped|title|disabled)="[^"]*")?(\s)*)*>/g) || []).length);

```

</section>

## Challenge Seed
<section id='challengeSeed'>

<div id='html-seed'>

```html
<h2 style="color: red;">CatPhotoApp</h2>
<main>
  <p>Click here to view more <a href="#">cat photos</a>.</p>

  <a href="#"><img src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>

  <div>
    <p>Things cats love:</p>
    <ul>
      <li>cat nip</li>
      <li>laser pointers</li>
      <li>lasagna</li>
    </ul>
    <p>Top 3 things cats hate:</p>
    <ol>
      <li>flea treatment</li>
      <li>thunder</li>
      <li>other cats</li>
    </ol>
  </div>

  <form action="/submit-cat-photo">
    <label><input type="radio" name="indoor-outdoor" checked> Indoor</label>
    <label><input type="radio" name="indoor-outdoor"> Outdoor</label><br>
    <label><input type="checkbox" name="personality" checked> Loving</label>
    <label><input type="checkbox" name="personality"> Lazy</label>
    <label><input type="checkbox" name="personality"> Energetic</label><br>
    <input type="text" placeholder="cat photo URL" required>
    <button type="submit">Submit</button>
  </form>
</main>
```

</div>



</section>

## Solution
<section id='solution'>

```html
<style>
  h2 {
    color: blue;
  }
</style>
<h2>CatPhotoApp</h2>
<main>
  <p>Click here to view more <a href="#">cat photos</a>.</p>

  <a href="#"><img src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>

  <div>
    <p>Things cats love:</p>
    <ul>
      <li>cat nip</li>
      <li>laser pointers</li>
      <li>lasagna</li>
    </ul>
    <p>Top 3 things cats hate:</p>
    <ol>
      <li>flea treatment</li>
      <li>thunder</li>
      <li>other cats</li>
    </ol>
  </div>

  <form action="/submit-cat-photo">
    <label><input type="radio" name="indoor-outdoor" checked> Indoor</label>
    <label><input type="radio" name="indoor-outdoor"> Outdoor</label><br>
    <label><input type="checkbox" name="personality" checked> Loving</label>
    <label><input type="checkbox" name="personality"> Lazy</label>
    <label><input type="checkbox" name="personality"> Energetic</label><br>
    <input type="text" placeholder="cat photo URL" required>
    <button type="submit">Submit</button>
  </form>
</main>
```

</section>