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    Build it yourself - Header

    Astro

    Build it yourself - Header

    Build it yourself - Header

    ---
<header>
  <nav>
    <Navigation />
  </nav>
</header>
```

</details>

    Try it yourself - Update your pages

    1. On each page, replace your existing `` component with your new header. 
    <details>
<summary>Show me the code!</summary>

```astro title="src/pages/index.astro" ins={3,18} del={2,17}
---
import Navigation from '../components/Navigation.astro';
import Header from '../components/Header.astro';
import Footer from '../components/Footer.astro';
import '../styles/global.css';
const pageTitle = "Home Page";
---
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <link rel="icon" type="image/svg+xml" href="/favicon.svg" />
    <meta name="viewport" content="width=device-width" />
    <meta name="generator" content={Astro.generator} />
    <title>{pageTitle}</title>
  </head>
  <body>
    <Navigation />
    <Header />
    <h1>{pageTitle}</h1>
    <Footer />
  </body>
</html>
```
</details>
    1. Check your browser preview and verify that your header is displayed on every page. It won't look different yet, but if you inspect your preview using dev tools, you will see that you now have elements like <header> and <nav> around your navigation links.

    Add responsive styles

    1. Update `Navigation.astro` with the CSS class to control your navigation links. Wrap the existing navigation links in a `
    ` with the class `nav-links` and the id attribute set to `main-menu`. 
    ```astro title="src/components/Navigation.astro" ins={3,7}
---
---
<div id="main-menu" class="nav-links">
  <a href="/">Home</a>
  <a href="/about/">About</a>
  <a href="/blog/">Blog</a>
</div>
```

    1. Copy the CSS styles below into global.css. These styles:

      • Style and position the navigation links for mobile
      • Use a @media query to define different styles for larger screen sizes

      :::tip[Mobile-first design] Start by defining what should happen on small screen sizes first! Smaller screen sizes require simpler layouts. Then, adjust your styles to accommodate larger devices. If you design the complicated case first, then you have to work to try to make it simple again. :::

      html {
  background-color: #f1f5f9;
  font-family: sans-serif;
}

body {
  margin: 0 auto;
  width: 100%;
  max-width: 80ch;
  padding: 1rem;
  line-height: 1.5;
}

* {
  box-sizing: border-box;
}

h1 {
  margin: 1rem 0;
  font-size: 2.5rem;
}

/* nav styles */

.nav-links {
  width: 100%;
  display: none;
  margin: 0;
}

.nav-links a {
  display: block;
  text-align: center;
  padding: 10px 0;
  text-decoration: none;
  font-size: 1.2rem;
  font-weight: bold;
  text-transform: uppercase;
  color: #0d0950;
}

.nav-links a:hover,
.nav-links a:focus {
  background-color: #ff9776;
}

@media screen and (min-width: 636px) {
  .nav-links {
    margin-left: 5em;
    display: block;
    position: static;
    width: auto;
    background: none;
  }

  .nav-links a {
    display: inline-block;
    padding: 15px 20px;
  }
}

    Resize your window and look for different styles being applied at different screen widths. Your header is now responsive to screen size through the use of @media queries.

    Checklist

    - [ ] I can use CSS to add responsive elements to my site.

    Resources