Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

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

Posted by MUZ140019 Nqobile Nyathi
MUZ140019 Nqobile Nyathi
1,074 Points

how to use an em unit to give the h2 a fontsize value equivalent to 53px

em and rem

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

header {
  font-size: 1.8em;
}

.title {
  font-size: 1.625rem;
}

h1 {
  font-size: 5.625rem;
}
h2 {
font-size: 5.625rem; /*16px/53px*/;
}
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>

3 Answers

Brian Ross
Brian Ross
2,360 Points
Brian Ross
Brian Ross
2,360 Points

My issue was rounding to 3 decimals, here's the answer. If you use 3.313em, your work will check as incorrect.

h2  {
  font-size: 3.3125em; /* 16px / 53px = 3.3125em */
}
  • Original question, "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 h2 a font-size value equivalent to 53px."
  • The original question defined the h2's parent element has a font-size of 16px.
  • 16px / 53px = 3.3125em
  • 3.3125em = 53px | reference: http://pxtoem.com/

I hope this helps someone!

Natallia Sasinovich
Natallia Sasinovich
2,676 Points
Natallia Sasinovich
Natallia Sasinovich
2,676 Points

If you don't have any text-size style for .main-content, the default 1em=16px, so 53px=53px/16px=3.3125em.

Antria Sofroniou
Antria Sofroniou
2,803 Points
Antria Sofroniou
Antria Sofroniou
2,803 Points

---px/16px because 1em=16px

53px/16px = 3,3125em

answer:

h2 { font-size: 3,3125em; }