freeCodeCamp

4.0 KiB

Raw Blame History

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

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 <h2 style="color: red">CatPhotoApp</h2>, you were styling that individual h2 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 style block like this:

<style>
</style>

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

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

Note that it's important to have both opening and closing curly braces ({ and }) 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.

Instructions

Delete your h2 element's style attribute, and instead create a CSS style block. Add the necessary CSS to turn all h2 elements blue.

Tests

tests:
  - text: Remove the style attribute from your <code>h2</code> element.
    testString: 'assert(!$("h2").attr("style"), "Remove the style attribute from your <code>h2</code> element.");'
  - text: Create a <code>style</code> element.
    testString: 'assert($("style") && $("style").length > 1, "Create a <code>style</code> element.");'
  - text: Your <code>h2</code> element should be blue.
    testString: 'assert($("h2").css("color") === "rgb(0, 0, 255)", "Your <code>h2</code> element should be blue.");'
  - text: Ensure that your stylesheet <code>h2</code> declaration is valid with a semicolon and closing brace.
    testString: 'assert(code.match(/h2\s*\{\s*color\s*:.*;\s*\}/g), "Ensure that your stylesheet <code>h2</code> declaration is valid with a semicolon and closing brace.");'
  - text: Make sure all your <code>style</code> elements are valid and have a closing tag.
    testString: 'assert(code.match(/<\/style>/g) && code.match(/<\/style>/g).length === (code.match(/<style((\s)*((type|media|scoped|title|disabled)="[^"]*")?(\s)*)*>/g) || []).length, "Make sure all your <code>style</code> elements are valid and have a closing tag.");'

Challenge Seed

<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>

Solution

// solution required

4.0 KiB Raw Blame History