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

kevinkrato
kevinkrato
5,452 Points
Posted by kevinkrato
kevinkrato
5,452 Points

Struggling with EM conversion (CSS)

If the base value is 16px and it wants me to convert to 53px through em... would that no be 16 x 3.313? Am I missing something?

thanks!

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: 3.313em;
}
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

Steven Ang
Steven Ang
41,751 Points
Steven Ang
Steven Ang
41,751 Points

Use the pixel value you want and divide by the parent's pixel value. By the default, if you didn't give the parent element any size property, it would be 16px.

The answer would just be 3.3125, no need to multiply it with 16. If you did, you will give the pixel value which 53px.

kevinkrato
kevinkrato
5,452 Points
kevinkrato
kevinkrato
5,452 Points

3.3125em work but 3.313 did not. That little .0005 difference was all it took.

anthony cummings
anthony cummings
9,961 Points
anthony cummings
anthony cummings
9,961 Points

You must remember that the pixels are in withs of 1000 place value when it is to be diplayed with aspect ratio for computer displays and mobilr devices.