CSS CSS Layout CSS Media Queries Media Queries

Larissa Ragland
Larissa Ragland
6,053 Points

i am stuck. any suggestions? please advice :)

@media (min-width: 421px) {
header {
    background-color: #294969;
    color: ghostwhite;

@media (min-width: 769px) {
      font-size: 1.4rem; }
    .h1 {
      font-size: 4rem; }


/* Complete the challenge by writing CSS below */
<!DOCTYPE html>
<html lang="en">
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Developer Diane's blog</title>
  <link rel="stylesheet" href="page.css">
  <link rel="stylesheet" href="style.css">
    <div id="logo">Developer Diane’s Blog</div>
    <section class="intro">
      <h1>The verdict is in. CSS Layout is great!</h1>
      <p>I’ve been working with CSS for a while now, and I have to say, it’s pretty awesome. I love being able to separate content from presentation, and to keep all my styles in an external stylesheet.</p>
      <p>I’ve had a pretty good grasp on the basics for a while now, but I needed to learn more about how to control layout with my CSS. Understanding CSS layout meant first exploring the parts of the CSS box model.</p>
    <section class="featured">
      <h2>The CSS Box Model</h2>
      <p>There are lots of great resources online to help you learn the CSS Box Model. I like the CSS Tricks article <a href="https://css-tricks.com/the-css-box-model/" target="_blank">The CSS Box Model</a> by Chris Coyier. To quote the author:</p>
      <blockquote>At the risk of over-repeating myself: <strong>every element in web design is a rectangular box.</strong></blockquote>
      <p>That’s right! Every HTML element is considered by the browser to be a rectangular box.</p>
      <p>The CSS Box Model consists of four properties: content, padding, border, and margin. I've included a graphic from Coyier’s article to illustrate this principle.</p>
      <p class="clear">It’s pretty easy to understand the Content portion of the box model. The content is whatever your HTML consists of. It could be a paragraph full of text, or a bulleted list, or an image.</p>
      <p>Beginning developers may have some trouble keeping the other parts of the box model straight, so let’s examine them one by one.</p>
    <footer>©2020 Developer Diane.</footer>

1 Answer

Peter Vann
Peter Vann
Treehouse Moderator 31,785 Points

When declaring media queries, keep in mind to target a device with a certain size or LARGER, use min-width.

To target a certain size or SMALLER, use max-width.

This passes both challenges:

/* Complete the challenge by writing CSS below */
@media screen and (min-width: 421px) {
  header {
    background-color: #294969;
    color: ghostwhite;

@media screen and (min-width: 769px) {
  #logo {
    font-size: 1.4rem;
  h1 {
    font-size: 4rem;

Also, if the instructions were to target devices LARGER THAN 421px (instead of 421px OR LARGER), then your media query would need to be:

@media screen and (min-width: 422px)

(one pixel higher - does that make sense?)

More info:



I hope that helps. Happy coding!