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CSS CSS Basics (2014) Understanding Values and Units Styling the Intro Paragraph

Posted by Elizabeth Eymann
Elizabeth Eymann
1,129 Points

I can't seem to get this. This is the question: In the style sheet, select the intro class and add a font-size property.

In the style sheet, select the intro class and add a font-size property. Using 16px as the parent font-size context, give intro an em font-size value equivalent to 20px.

This is my code, in the style.css:

.intro: { font-size: 1em; }

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 id="top" class="main-header">
      <span class="title">Journey Through the Sierra Nevada Mountains</span>
      <h1>Lake Tahoe, California</h1>
    </header>
    <div class="primary-content t-border">
      <p class= "intro"
         >
        Lake Tahoe is one of the most <span>breathtaking attractions</span> 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="#more">Find out more</a>
    </div>
    <footer class="main-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>
style.css 
/* Complete the challenge by writing CSS below */
.intro {
  font-size: 1em;
}

4 Answers

shadrackndacayisenga
.a{fill-rule:evenodd;}techdegree
shadrackndacayisenga
Python Web Development Techdegree Student 14,189 Points

It just a matter of converting px size units values into em size unit values.

By saying parent font-size = 16px Simply means that 1em = 16px

Thus if 16px = 1em Then 20 px is definitely greater than 1 em.

Just take 20px divide by 16px and muliply by 1 em, and your font-size value is given in ems.

Therefore

 (20px / 16px) x 1 em  =  1.25em

Thats the formula.

px_value /parent_px-value x 1 em
AIDAN RUNNER
AIDAN RUNNER
9,813 Points
AIDAN RUNNER
AIDAN RUNNER
9,813 Points

Hey Elizabeth, the em unit is based off the font-size for the parent element. The standard font-size is 16px. So with a parent element font-size of 16px = 1em, adjusting to 20px = 1.25em.

Essentially, em units are relative units that can scale based off the parent element.

Elizabeth Eymann
Elizabeth Eymann
1,129 Points
Elizabeth Eymann
Elizabeth Eymann
1,129 Points

Thank you!

Heba Hendy
Heba Hendy
7,786 Points
Heba Hendy
Heba Hendy
7,786 Points

.intro{ font-size:1.25em; }