Pen Settings

HTML

About HTML Preprocessors

HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.

Learn more · Versions

Adding Classes

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. So you don't have access to higher-up elements like the <html> tag. If you want to add classes there that can affect the whole document, this is the place to do it.

About the <head>

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. If you need things in the <head> of the document, put that code here.

!
Insecure Resource

The resource you are linking to is using the 'http' protocol, which may not work when the browser is using https.

CSS

About CSS Preprocessors

CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

Learn more · Versions

CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

Vendor Prefixing

About Vendor Prefixing

To get the best cross-browser support, it is a common practice to apply vendor prefixes to CSS properties and values that require them to work. For instance -webkit- or -moz-.

We offer two popular choices: Autoprefixer (which processes your CSS server-side) and -prefix-free (which applies prefixes via a script, client-side).

Add External Stylesheets/Pens

Any URLs added here will be added as <link>s in order, and before the CSS in the editor. You can use the CSS from another Pen by using its URL and the proper URL extension.

Powered by Algolia
About External Resources

You can apply CSS to your Pen from any stylesheet on the web. Just put a URL to it here and we'll apply it, in the order you have them, before the CSS in the Pen itself.

You can also link to another Pen here (use the .css URL Extension) and we'll pull the CSS from that Pen and include it. If it's using a matching preprocessor, use the appropriate URL Extension and we'll combine the code before preprocessing, so you can use the linked Pen as a true dependency.

Learn more

+ add another resource

JavaScript

About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

Learn more · Versions

Babel includes JSX processing.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

Powered by Algolia
About External Resources

You can apply a script from anywhere on the web to your Pen. Just put a URL to it here and we'll add it, in the order you have them, before the JavaScript in the Pen itself.

If the script you link to has the file extension of a preprocessor, we'll attempt to process it before applying.

You can also link to another Pen here, and we'll pull the JavaScript from that Pen and include it. If it's using a matching preprocessor, we'll combine the code before preprocessing, so you can use the linked Pen as a true dependency.

Learn more

+ add another resource

Packages

Add Packages

Search for and use JavaScript packages from npm here. By selecting a package, an import statement will be added to the top of the JavaScript editor for this package.

Powered by Algolia
About Packages

Using packages here is powered by esm.sh, which makes packages from npm not only available on a CDN, but prepares them for native JavaScript ESM usage.

All packages are different, so refer to their docs for how they work.

If you're using React / ReactDOM, make sure to turn on Babel for the JSX processing.

Behavior

Auto Save

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

Format on Save

If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.

Editor Settings

Code Indentation

Want to change your Syntax Highlighting theme, Fonts and more?

Visit your global Editor Settings.

HTML 

              
                <div id="app">

  <header class="header">
    <nav class="header__nav">
      <ul class="header__navbar">
        <li class="header__item">
          <a href="#" class="header__link">
            <transition name="slide-fade">
              <!-- Header Navigation Menu Icons -->
              <button class="header--button" v-if="show" key="on" @click="show = false">
                <svg viewBox="0 0 24 24" class="header--icon">
                  <title>Close</title>
                  <path d="M0 0h24v24H0V0z" fill="none" />
                  <path fill="currentColor" d="M18.3 5.71c-.39-.39-1.02-.39-1.41 0L12 10.59 7.11 5.7c-.39-.39-1.02-.39-1.41 0-.39.39-.39 1.02 0 1.41L10.59 12 5.7 16.89c-.39.39-.39 1.02 0 1.41.39.39 1.02.39 1.41 0L12 13.41l4.89 4.89c.39.39 1.02.39 1.41 0 .39-.39.39-1.02 0-1.41L13.41 12l4.89-4.89c.38-.38.38-1.02 0-1.4z" />
                </svg>
              </button>
              <button class="header--button" v-else key="off" @click="show = true">
                <svg viewBox="0 0 24 24" class="header--icon">
                  <title>Navigation Menu</title>
                  <path fill="currentColor" d="M6,8c1.1,0 2,-0.9 2,-2s-0.9,-2 -2,-2 -2,0.9 -2,2 0.9,2 2,2zM12,20c1.1,0 2,-0.9 2,-2s-0.9,-2 -2,-2 -2,0.9 -2,2 0.9,2 2,2zM6,20c1.1,0 2,-0.9 2,-2s-0.9,-2 -2,-2 -2,0.9 -2,2 0.9,2 2,2zM6,14c1.1,0 2,-0.9 2,-2s-0.9,-2 -2,-2 -2,0.9 -2,2 0.9,2 2,2zM12,14c1.1,0 2,-0.9 2,-2s-0.9,-2 -2,-2 -2,0.9 -2,2 0.9,2 2,2zM16,6c0,1.1 0.9,2 2,2s2,-0.9 2,-2 -0.9,-2 -2,-2 -2,0.9 -2,2zM12,8c1.1,0 2,-0.9 2,-2s-0.9,-2 -2,-2 -2,0.9 -2,2 0.9,2 2,2zM18,14c1.1,0 2,-0.9 2,-2s-0.9,-2 -2,-2 -2,0.9 -2,2 0.9,2 2,2zM18,20c1.1,0 2,-0.9 2,-2s-0.9,-2 -2,-2 -2,0.9 -2,2 0.9,2 2,2z" />
                </svg>
              </button>
            </transition>
          </a>
          <!-- Dropdown Menu -->
          <transition name="dropdown">
            <div class="dropdown__menu" v-bind:class="{ active: show }" v-if="show">
              <ul class="dropdown__menu-nav">
                <li class="dropdown__menu-item">
                  <a href="#" class="dropdown__menu-link" title="Account">
                    <div class="dropdown__menu-svg">
                      <svg viewBox="0 0 496 512">
                        <path fill="currentColor" d="M248 8C111 8 0 119 0 256s111 248 248 248 248-111 248-248S385 8 248 8zm128 421.6c-35.9 26.5-80.1 42.4-128 42.4s-92.1-15.9-128-42.4V416c0-35.3 28.7-64 64-64 11.1 0 27.5 11.4 64 11.4 36.6 0 52.8-11.4 64-11.4 35.3 0 64 28.7 64 64v13.6zm30.6-27.5c-6.8-46.4-46.3-82.1-94.6-82.1-20.5 0-30.4 11.4-64 11.4S204.6 320 184 320c-48.3 0-87.8 35.7-94.6 82.1C53.9 363.6 32 312.4 32 256c0-119.1 96.9-216 216-216s216 96.9 216 216c0 56.4-21.9 107.6-57.4 146.1zM248 120c-48.6 0-88 39.4-88 88s39.4 88 88 88 88-39.4 88-88-39.4-88-88-88zm0 144c-30.9 0-56-25.1-56-56s25.1-56 56-56 56 25.1 56 56-25.1 56-56 56z" />
                      </svg>
                    </div>
                    <div class="dropdown__menu-text">Account</div>
                  </a>
                </li>
                <li class="dropdown__menu-item">
                  <a href="#" class="dropdown__menu-link" title="Personal info">
                    <div class="dropdown__menu-svg">
                      <svg viewBox="0 0 576 512">
                        <path fill="currentColor" d="M512 32H64C28.7 32 0 60.7 0 96v320c0 35.3 28.7 64 64 64h448c35.3 0 64-28.7 64-64V96c0-35.3-28.7-64-64-64zm32 384c0 17.6-14.4 32-32 32H64c-17.6 0-32-14.4-32-32V96c0-17.6 14.4-32 32-32h448c17.6 0 32 14.4 32 32v320zm-72-128H360c-4.4 0-8 3.6-8 8v16c0 4.4 3.6 8 8 8h112c4.4 0 8-3.6 8-8v-16c0-4.4-3.6-8-8-8zm0-64H360c-4.4 0-8 3.6-8 8v16c0 4.4 3.6 8 8 8h112c4.4 0 8-3.6 8-8v-16c0-4.4-3.6-8-8-8zm0-64H360c-4.4 0-8 3.6-8 8v16c0 4.4 3.6 8 8 8h112c4.4 0 8-3.6 8-8v-16c0-4.4-3.6-8-8-8zM208 288c44.2 0 80-35.8 80-80s-35.8-80-80-80-80 35.8-80 80 35.8 80 80 80zm0-128c26.5 0 48 21.5 48 48s-21.5 48-48 48-48-21.5-48-48 21.5-48 48-48zm46.8 144c-19.5 0-24.4 7-46.8 7s-27.3-7-46.8-7c-21.2 0-41.8 9.4-53.8 27.4C100.2 342.1 96 355 96 368.9V392c0 4.4 3.6 8 8 8h16c4.4 0 8-3.6 8-8v-23.1c0-7 2.1-13.8 6-19.6 5.6-8.3 15.8-13.2 27.3-13.2 12.4 0 20.8 7 46.8 7 25.9 0 34.3-7 46.8-7 11.5 0 21.7 5 27.3 13.2 3.9 5.8 6 12.6 6 19.6V392c0 4.4 3.6 8 8 8h16c4.4 0 8-3.6 8-8v-23.1c0-13.9-4.2-26.8-11.4-37.5-12.3-18-32.9-27.4-54-27.4z" />
                      </svg>
                    </div>
                    <div class="dropdown__menu-text">Personal info</div>
                  </a>
                </li>
                <li class="dropdown__menu-item">
                  <a href="#" class="dropdown__menu-link" title="Privacy">
                    <div class="dropdown__menu-svg">
                      <svg viewBox="0 0 512 512">
                        <path fill="currentColor" d="M256 169.92c-28.28.41-52.84 9.62-71.37 28.17-18 18-27.69 41.94-27.28 67.44.78 50.23-3.91 100.5-14 149.39-1.81 8.66 3.78 17.12 12.41 18.91 8.5 1.66 17.09-3.77 18.91-12.44 10.56-51.17 15.5-103.78 14.69-156.35-.25-16.77 6.09-32.5 17.91-44.31 18.66-18.66 42.27-18.8 48.75-18.8 37.12.55 66.41 30.19 66.97 66.06.78 50.37-2.97 100.86-11.12 150.06-1.44 8.72 4.44 16.95 13.16 18.39.91.16 1.78.22 2.66.22 7.69 0 14.47-5.55 15.75-13.39 8.47-51.08 12.34-103.48 11.56-155.79-.87-53-44.81-96.76-99-97.56zm-.09 86.09c-8.84.14-15.87 7.41-15.75 16.25 1.12 73.39-8.22 144.99-27.78 215.07l-1.22 4.33c-1.85 6.63 1.74 20.34 15.41 20.34 7 0 13.41-4.61 15.41-11.66l1.22-4.37c20.41-73.08 30.16-147.74 28.97-224.21-.14-8.84-8.23-15.9-16.26-15.75zM112.66 149.79c-25.19 30.98-38.72 70.11-38.09 110.15.62 39.56-2.62 79.14-9.59 117.61-1.56 8.7 4.19 17.03 12.91 18.61.97.17 1.91.25 2.87.25 7.56 0 14.31-5.42 15.72-13.14 7.34-40.53 10.72-82.18 10.09-123.82-.53-33.01 10.19-63.95 30.91-89.47 5.59-6.86 4.53-16.94-2.31-22.51-6.85-5.55-16.91-4.57-22.51 2.32zm399.22 103.03c-.25-16.5-2.19-33.03-5.75-49.14-1.91-8.61-10.34-14-19.06-12.17-8.62 1.91-14.09 10.44-12.19 19.08 3.09 14 4.78 28.39 5 42.73.12 7.66.16 15.31.09 22.97-.06 8.83 7.03 16.05 15.87 16.12h.12c8.78 0 15.94-7.08 16-15.87.07-7.91.04-15.81-.08-23.72zM252.6.05C182.63-1.29 118.32 24.88 70.32 72.91 24.04 119.22-.87 180.76.16 246.2c.12 7.55.06 15.09-.16 22.62-.25 8.83 6.72 16.2 15.56 16.45H16c8.62 0 15.75-6.87 16-15.55.22-8 .28-16.02.16-24.03-.9-56.69 20.69-110.04 60.78-150.16 41.78-41.84 98.9-64.37 159.15-63.48 74.69 1.09 144.87 38.23 187.75 99.32 5.12 7.23 15.12 8.97 22.28 3.91 7.25-5.08 9-15.05 3.91-22.28C417.28 43.52 337.5 1.3 252.6.05zm1.28 84.93a182.36 182.36 0 0 0-45.19 4.91c-8.59 2.03-13.91 10.66-11.87 19.26 2.03 8.58 10.75 13.87 19.25 11.86 12.12-2.86 25.09-4.25 37.31-4.03 82.78 1.22 151.12 67.56 152.37 147.89.62 39.65-1.34 79.59-5.81 118.7-1 8.78 5.31 16.7 14.09 17.7.62.08 1.22.11 1.84.11 8 0 14.94-6.02 15.87-14.19 4.62-40.47 6.62-81.79 6-122.82-1.49-97.44-83.99-177.92-183.86-179.39z" />
                      </svg>
                    </div>
                    <div class="dropdown__menu-text">Privacy</div>
                  </a>
                </li>
                <li class="dropdown__menu-item">
                  <a href="#" class="dropdown__menu-link" title="Data &amp; personalization">
                    <div class="dropdown__menu-svg">
                      <svg viewBox="0 0 496 512">
                        <path fill="currentColor" opacity="0.4" d="M447 73.14v45.72C447 159.14 346.67 192 223 192S-1 159.14-1 118.86V73.14C-1 32.86 99.33 0 223 0s224 32.86 224 73.14z" />
                        <path fill="currentColor" d="M-1 336v102.86C-1 479.14 99.33 512 223 512s224-32.86 224-73.14V336c-48.13 33.14-136.21 48.57-224 48.57S47.12 369.14-1 336zm224-111.43c-87.79 0-175.88-15.43-224-48.57v102.86C-1 319.14 99.33 352 223 352s224-32.86 224-73.14V176c-48.13 33.14-136.21 48.57-224 48.57z" />
                      </svg>
                    </div>
                    <div class="dropdown__menu-text">Data &amp; personalization</div>
                  </a>
                </li>
                <li class="dropdown__menu-item">
                  <a href="#" class="dropdown__menu-link" title="People &amp; sharing">
                    <div class="dropdown__menu-svg">
                      <svg viewBox="0 0 640 512">
                        <path fill="currentColor" d="M480 256c53 0 96-43 96-96s-43-96-96-96-96 43-96 96 43 96 96 96zm0-160c35.3 0 64 28.7 64 64s-28.7 64-64 64-64-28.7-64-64 28.7-64 64-64zM192 256c61.9 0 112-50.1 112-112S253.9 32 192 32 80 82.1 80 144s50.1 112 112 112zm0-192c44.1 0 80 35.9 80 80s-35.9 80-80 80-80-35.9-80-80 35.9-80 80-80zm80.1 212c-33.4 0-41.7 12-80.1 12-38.4 0-46.7-12-80.1-12-36.3 0-71.6 16.2-92.3 46.9C7.2 341.3 0 363.4 0 387.2V432c0 26.5 21.5 48 48 48h288c26.5 0 48-21.5 48-48v-44.8c0-23.8-7.2-45.9-19.6-64.3-20.7-30.7-56-46.9-92.3-46.9zM352 432c0 8.8-7.2 16-16 16H48c-8.8 0-16-7.2-16-16v-44.8c0-16.6 4.9-32.7 14.1-46.4 13.8-20.5 38.4-32.8 65.7-32.8 27.4 0 37.2 12 80.2 12s52.8-12 80.1-12c27.3 0 51.9 12.3 65.7 32.8 9.2 13.7 14.1 29.8 14.1 46.4V432zm271.7-114.9C606.4 291.5 577 278 546.8 278c-27.8 0-34.8 10-66.8 10s-39-10-66.8-10c-13.2 0-26.1 3-38.1 8.1 15.2 15.4 18.5 23.6 20.2 26.6 5.7-1.6 11.6-2.6 17.9-2.6 21.8 0 30 10 66.8 10s45-10 66.8-10c21 0 39.8 9.3 50.4 25 7.1 10.5 10.9 22.9 10.9 35.7V408c0 4.4-3.6 8-8 8H416c0 17.7.3 22.5-1.6 32H600c22.1 0 40-17.9 40-40v-37.3c0-19.9-6-38.3-16.3-53.6z" />
                      </svg>
                    </div>
                    <div class="dropdown__menu-text">People &amp; sharing</div>
                  </a>
                </li>
                <li class="dropdown__menu-item">
                  <a href="#" class="dropdown__menu-link" title="Subscriptions">
                    <div class="dropdown__menu-svg">
                      <svg viewBox="0 0 576 512">
                        <path fill="currentColor" d="M528 31H48C21.5 31 0 52.5 0 79v352c0 26.5 21.5 48 48 48h480c26.5 0 48-21.5 48-48V79c0-26.5-21.5-48-48-48zm16 400c0 8.8-7.2 16-16 16H48c-8.8 0-16-7.2-16-16V79c0-8.8 7.2-16 16-16h480c8.8 0 16 7.2 16 16v352zm-352-68v8c0 6.6-5.4 12-12 12h-72c-6.6 0-12-5.4-12-12v-8c0-6.6 5.4-12 12-12h72c6.6 0 12 5.4 12 12zm192 0v8c0 6.6-5.4 12-12 12H236c-6.6 0-12-5.4-12-12v-8c0-6.6 5.4-12 12-12h136c6.6 0 12 5.4 12 12z" />
                      </svg>
                    </div>
                    <div class="dropdown__menu-text">Subscriptions</div>
                  </a>
                </li>
                <!-- Dropdown Menu Separator -->
                <hr>
                <li class="dropdown__menu-item">
                  <a href="#" class="dropdown__menu-link" title="Help">
                    <div class="dropdown__menu-svg">
                      <svg viewBox="0 0 512 512">
                        <path fill="currentColor" d="M256 340c-15.464 0-28 12.536-28 28s12.536 28 28 28 28-12.536 28-28-12.536-28-28-28zm7.67-24h-16c-6.627 0-12-5.373-12-12v-.381c0-70.343 77.44-63.619 77.44-107.408 0-20.016-17.761-40.211-57.44-40.211-29.144 0-44.265 9.649-59.211 28.692-3.908 4.98-11.054 5.995-16.248 2.376l-13.134-9.15c-5.625-3.919-6.86-11.771-2.645-17.177C185.658 133.514 210.842 116 255.67 116c52.32 0 97.44 29.751 97.44 80.211 0 67.414-77.44 63.849-77.44 107.408V304c0 6.627-5.373 12-12 12zM256 40c118.621 0 216 96.075 216 216 0 119.291-96.61 216-216 216-119.244 0-216-96.562-216-216 0-119.203 96.602-216 216-216m0-32C119.043 8 8 119.083 8 256c0 136.997 111.043 248 248 248s248-111.003 248-248C504 119.083 392.957 8 256 8z" />
                      </svg>
                    </div>
                    <div class="dropdown__menu-text">Help</div>
                  </a>
                </li>
                <li class="dropdown__menu-item">
                  <a href="#" class="dropdown__menu-link" title="Send feedback">
                    <div class="dropdown__menu-svg">
                      <svg viewBox="0 0 512 512">
                        <path fill="currentColor" d="M448 0H64C28.7 0 0 28.7 0 64v288c0 35.3 28.7 64 64 64h96v84c0 7.1 5.8 12 12 12 2.4 0 4.9-.7 7.1-2.4L304 416h144c35.3 0 64-28.7 64-64V64c0-35.3-28.7-64-64-64zm32 352c0 17.6-14.4 32-32 32H293.3l-8.5 6.4L192 460v-76H64c-17.6 0-32-14.4-32-32V64c0-17.6 14.4-32 32-32h384c17.6 0 32 14.4 32 32v288zm-224-88c-13.3 0-24 10.7-24 24s10.7 24 24 24 24-10.7 24-24-10.7-24-24-24zm-8.5-24h17c4.2 0 7.7-3.3 8-7.5l7-112c.3-4.6-3.4-8.5-8-8.5h-31c-4.6 0-8.3 3.9-8 8.5l7 112c.3 4.2 3.8 7.5 8 7.5z" />
                      </svg>
                    </div>
                    <div class="dropdown__menu-text">Send feedback</div>
                  </a>
                </li>
              </ul>
            </div>
          </transition>
        </li>
      </ul>
    </nav>
  </header>

</div>
!

CSS 

              
                :root {
  --font-primary: 'Open Sans', sans-serif;
  --color-gray: #dadce0;
}

// Global

*,
::after,
::before {
  box-sizing: border-box;
}

body {
  font-size: 1rem;
  -webkit-text-size-adjust: 100%;
  font-family: var(--font-primary);
  overflow: hidden;
}
hr {
  border: 0;
  height: 0;
  margin: 1.5rem 0;
  border-top: 1px solid var(--color-gray);
}

// Header Menu

.header {
  padding: 2rem 5rem 2rem 5rem;
  &__nav {
    position: relative;
  }
  &__navbar {
    display: flex;
    align-items: center;
    justify-content: flex-end;
  }
  &__item {
    padding: 1rem;
  }
  &--icon {
    width: 1.65rem;
    height: 1.65rem;
  }
  &--button {
    top: 0;
    right: 0;
    position: absolute;
    margin: 0;
    padding: 0;
    color: gray;
    cursor: pointer;
    border: 1px solid transparent;
    background-color: transparent;
    &:focus {
      outline: 0;
    }
  }
}

// Dropdown Menu

.dropdown__menu {
  top: 100%;
  right: 0;
  position: absolute;
  z-index: 10;
  height: 25rem;
  min-width: 300px;
  margin-top: 1rem;
  overflow-y: auto;
  padding: 2rem 1rem 2rem 0rem;
  border-radius: 12px;
  background-color: white;
  border: 1px solid var(--color-gray);
  background-clip: padding-box;
  &-link {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    text-decoration: none;
    color: rgba(0, 0, 0, 0.6);
    padding: 0.8rem 0 0.8rem 2rem;
    margin-top: 0.2rem;
    margin-bottom: 0.2rem;
    border-radius: 0 50px 50px 0;
    &:hover {
      color: #17bf63;
      background-color: rgba(79, 192, 141, 0.1);
    }
  }
  &-svg {
    width: 1.5rem;
    height: 1.5rem;
  }
  &-text {
    font-weight: 300;
    margin-left: 1rem;
    margin-right: 1rem;
  }
}

// Animation Menu Icon

.slide-fade-enter-active,
.slide-fade-leave-active {
  transition: all 0.6s;
}
.slide-fade-enter,
.slide-fade-leave-active {
  opacity: 0;
}
.slide-fade-enter {
  transform: translateX(31px);
}
.slide-fade-leave-active {
  transform: translateX(-31px);
}

// Dropdown Menu Animation

.dropdown-enter-active,
.dropdown-leave-active {
  transition: all 1s;
}
.dropdown-enter,
.dropdown-leave-to {
  opacity: 0;
  transform: translateY(30px);
}

// Wrapper

.main {
  margin: 6rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  &__subtitle {
    color: #4f5959;
    font-weight: 100;
    margin-bottom: 2rem;
  }
  &__link {
    margin-right: 1.5rem;
    display: inline-block;
    &:last-child {
      margin-right: 0;
    }
  }
  &__svg {
    width: 2rem;
    height: 2rem;
    opacity: 0.6;
    color: #94a2b0;
    &:hover {
      color: #ffad1f;
    }
  }
}
!

JS 

              
                var app = new Vue ({
  el: '#app',
  data: {
    show: false
  }
})
!
999px

Console