CSS CSS Basics (2014) Basic Selectors ID and Class Selectors

Sunny Chu
Sunny Chu
4,465 Points

Should I use Px or Pt?

For unit measurement, what is the difference between Px & Pt?

If I want to be consistent and choose to use one, which one is more preferable?

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 class="main-header">
      <span>Journey through the Sierra Nevada Mountains</span>
      <h1 class="main-heading">Lake Tahoe, California</h1>
    </header>
    <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>
    <div>
      <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>
    </div>
  </body>
</html>
style.css
/* Complete the challenge by writing CSS below */
.main-header{
  background-color:orange;
}

.main-heading{
  font-size:72px;
}

1 Answer

Nils Kriedner
Nils Kriedner
23,091 Points

You generally use px.

pt is an „absolute length unit“.

W3Schools says about it:

„Absolute length units are not recommended for use on screen, because screen sizes vary so much. However, they can be used if the output medium is known, such as for print layout.“

https://www.w3schools.com/cssref/css_units.asp