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CSS CSS Basics (2014) Understanding Values and Units Em and Rem Units

Posted by Zakiullah Sediqyar
Zakiullah Sediqyar
1,180 Points

Create a new rule that targets the h2. The h2's parent element has a font-size value of 16px. Use an em unit to give the

Can anybody help me out with this? I seem to not understand the nature of the question.

Thanks

style.css 
/* Complete the challenge by writing CSS below */

header {
  font-size: 16px;
}

.title {
  font-size: 1.625rem;
}

h1 {
  font-size: 3.35rem;
}
index.html 
<!DOCTYPE html>
<html>
  <head>
    <title>Lake Tahoe</title>
    <link rel="stylesheet" href="page.css">
    <link rel="stylesheet" href="style.css">
  </head>
  <body>
    <header>
      <span class="title">Journey through the Sierra Nevada Mountains</span>
      <h1>Lake Tahoe, California</h1>
    </header>
    <div class="main-content">
      <p>
        Lake Tahoe is one of the most breathtaking attractions located in California. It's home to a number of ski resorts, summer outdoor recreation, and tourist attractions. Snow and skiing are a significant part of the area's reputation.
      </p>
      <a href="#">Find out more</a>
      <h2>Check out all the Wildlife</h2>
      <p>
        As spawning season approaches, the fish acquire a humpback and protuberant jaw. After spawning, they die and their carcasses provide a feast for gatherings of mink, bears, and Bald eagles.
      </p>
      <a href="#">See the Wildlife</a>
      <h3>From Tents to Resorts</h3>
      <p>
        Lake Tahoe is full of wonderful places to stay. You have the ability to sleep in the outdoors in a tent, or relax like a king at a five star resort. Here are our top three resorts:
      </p>
    </div>
    <footer>
      <p>All rights reserved to the state of <a href="#">California</a>.</p>
      <a href="#top">Back to top &raquo;</a>
    </footer>
  </body>
</html>

2 Answers

Ivy DeWitt
Ivy DeWitt
10,925 Points

Hi Zakiullah,

So in this challenge your goal is to convert the pixel units to an em value. Since em units are based off of the parent elements font size, we need to divide that value by our estimated pixel size to get the resulting em unit. The general formula looks something like this:

[Estimated Pixel Size] / [Default Pixel Size] = [Resulting Em Unit]

In the exericse it will look something like the below.

/* Complete the challenge by writing CSS below */

header {
  font-size: 1.8em;
}

.title {
  font-size: 1.625rem;
}

h1 {
  font-size: 5.625rem;
}

h2 {
  /* 53px / 16px = 3.3125em */
 font-size: 3.3125em; 
}

You can also use a converter such as the one at W3Schools to test what em results you get with different default sizes: https://www.w3schools.com/CSSref/css_pxtoemconversion.asp. Additionally, this resource may be helpful as well: https://www.impressivewebs.com/understanding-em-units-css/. Hope this helps!

Zakiullah Sediqyar
Zakiullah Sediqyar
1,180 Points

Thanks a lot.