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 

              
                <main class="view0--active">
  <div class="modal">
    <div class="nav default-color">
      <div class="next nav-icon"><svg fill="#ececec" height="24" viewBox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"><path d="M8.59 16.34l4.58-4.59-4.58-4.59L10 5.75l6 6-6 6z"/><path d="M0-.25h24v24H0z" fill="none"/></svg></div>
      <div class="prev nav-icon"><svg fill="#ececec" height="24" viewBox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"><path d="M15.41 16.09l-4.58-4.59 4.58-4.59L14 5.5l-6 6 6 6z"/><path d="M0-.5h24v24H0z" fill="none"/></svg></div>
    </div>
    <div class="modal__body">
      <div class="circ">
        <div class="circ3 default-color"></div>
        <div class="circ2"></div>
        <div class="circ1 default-color"></div>
      </div>
      <div class="content">
        <div class="tt">
          <h1 class="content__title"></h1>
          <p class="content__desc"></p>
        </div>
      </div>
      </div>
  </div>
</main>
!

CSS 

              
                *, *:before, *:after
  padding 0
  margin 0
  box-sizing border-box
  
box(arg)
  width arg
  height arg
  
// colors
color1 = #ff885d
color2 = #ACD8AA
color3 = #94B9AF
color4 = #06D6A0

.view0--active
  background color1
  .default-color
    background color1
.view1--active
  background color2
  .default-color
    background color2
.view2--active
  background color3
  .default-color
    background color3
.view3--active
  background color4
  .default-color
    background color4
  
body
  height 100vh
  width 100vw
  overflow hidden
main
  box(100%)
  display flex 
  align-items center
  justify-content center
  transition .5s

.modal
  height 400px
  width 700px
  border-radius 5px
  position relative
  &__body
    box(100%)
    box-shadow 0 0 38px 0 rgba(#000, .53)
    position relative
    overflow hidden

.nav  
  left 40px
  bottom -40px
  width 80px
  height 40px
  position absolute
  box-shadow 0 0 38px 0 rgba(#000, .53)
  transform translateY(-30px)
  opacity 0
  animation nav-animation .5s 1s ease forwards
  transition .5s
  .nav-icon
    box(40px)
    position absolute
    top 0
    display flex
    align-items center
    justify-content center
    cursor pointer
    transition .3s
  .prev
    left 0
    &:hover
      transform translateX(-2px)
  .next
    right 0 
    &:hover
      transform translateX(2px)
      
.content
  position absolute
  top 0
  left 0
  width 100%
  height 100%
  overflow hidden
  overflow-y auto
  padding 30px 140px 40px 50px
  color #ececec
  background #333
  h1
    padding-top 20px
    font-family 'Caesar Dressing'
    transform translateY(-20px)
    opacity 0
    animation animate-text-down 1s .6s forwards
    transition .5s
  p
    font-family 'Open Sans Condensed'
    font-size 18px
    padding-top 30px
    transform translateY(-20px)
    opacity 0
    animation animate-text-down 1s .9s forwards
    transition .5s
.circ
  box(300px)
  position absolute
  display flex
  align-items center
  justify-content center
  bottom -150px
  right -150px
  z-index 10
  animation main-circ 6s ease forwards infinite
  transition .5s
  > div
    position absolute
    border-radius 50%
    transform scale(0)
    transition .5s

.circ1
  box(100px)
  animation scale-circ ease .6s forwards

.circ2
  box(200px)
  background-color #fff
  animation scale-circ ease .6s .2s forwards
.circ3
  box(300px)
  animation scale-circ ease .6s .4s forwards
.tt
  transition .4s
body
  .fade-out
    .tt
      opacity 0
      transform translateY(-20px)

    .circ
      opacity 0
      transform scale(.5)

  
// Keyframes
@keyframes animate-text-down
  to
    opacity 1
    transform translateY(0)
    
@keyframes scale-circ
  80%
    transform scale(1.2)
  100%
    transform scale(1)

@keyframes nav-animation
  to
    transform none
    opacity 1
!

JS 

              
                // Inspired by: https://dribbble.com/shots/3545421-017-Email-receipt

function $(e) { return document.querySelector(e); }

var next = $('.next');
var prev = $('.prev');
var index = 0;

var randomText = [
  {
    title: "Yeah Mr. White! Yeah Science!",
    desc: "Lorem ipsum dolor sit amet, consectetur adipisicing elit. Cum atque placeat, blanditiis soluta possimus voluptatem ea nostrum illo, in facere perspiciatis eveniet voluptatum ex quia vel eaque optio, veritatis odio!"
  },
  {
    title: "Yeah Mr. White! Yeah Science!",
    desc: "Lorem ipsum dolor sit amet, consectetur adipisicing elit. Facilis, quos, vero earum cumque debitis nesciunt doloribus saepe, eaque, dolore ea aut. Soluta voluptatem magnam possimus suscipit culpa at impedit tempora, perferendis ducimus reprehenderit eos? Expedita ipsa, natus. Sapiente laboriosam vero, minus possimus esse odio fuga dolore minima eius, tenetur tempora!"
  },
  {
    title: "Yeah Mr. White! Yeah Science!",
    desc: "Lorem ipsum dolor sit amet, consectetur adipisicing elit. Beatae fugit inventore."
  },
  {
    title: "Yeah Mr. White! Yeah Science!",
    desc: "Lorem ipsum dolor sit amet, consectetur adipisicing elit. Beatae fugit inventore. <br>1. Lorem Ipsum <br>2. Lorem Ipsum <br>3. Lorem Ipsum <br>4. Lorem Ipsum"
  } 
];

$('.content__title').innerHTML = randomText[0].title;
$('.content__desc').innerHTML = randomText[0].desc;

next.addEventListener('click', function() {
  if (index >= 0 && index <= 2) {
    toggleView();
    setTimeout(function() {
      $('.content__title').innerHTML = randomText[index].title;
      $('.content__desc').innerHTML = randomText[index].desc;      
    }, 500)
    $('main').classList.remove('view'+index+'--active');
    $('main').classList.add('view'+(index + 1)+'--active');
    index++;
  }
}, false);

prev.addEventListener('click', function() {
  if (index > 0 && index <= 3) {
    toggleView();
    setTimeout(function() {
      $('.content__title').innerHTML = randomText[index].title;
      $('.content__desc').innerHTML = randomText[index].desc;      
    }, 500)
    $('main').classList.remove('view'+(index)+'--active');
    $('main').classList.add('view'+(index - 1)+'--active');
    index--;
  }
}, false)

function toggleView() {
    $('main').classList.add('fade-out');
    setTimeout(function() {
      $('main').classList.remove('fade-out');
    }, 500)
}
!
999px

Console