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HTML

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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.

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Adding Classes

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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.

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Insecure Resource

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CSS

About CSS Preprocessors

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

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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).

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JavaScript

About JavaScript Preprocessors

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

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Babel includes JSX processing.

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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.

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Packages

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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.

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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.

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HTML 

              
                - arr = []
- arr << {title: 'Japan', descr: 'Maxime vero sunt consequatur nemo', pic: 'https://images.unsplash.com/photo-1491884662610-dfcd28f30cfb?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&cs=tinysrgb&w=400&fit=max&ixid=eyJhcHBfaWQiOjE0NTg5fQ&s=8d3138eed2abdfdda487a4267b5d1aa1'}
- arr << {title: 'France', descr: 'Dolorum consequuntur at commodi', pic: 'https://images.unsplash.com/photo-1458262488536-98366625ae59?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&cs=tinysrgb&w=400&fit=max&ixid=eyJhcHBfaWQiOjE0NTg5fQ&s=bea133b701eb5072854d295df1c2eb16'}
- arr << {title: 'Mexico', descr: 'Ut fuga facere tempore iste', pic: 'https://images.unsplash.com/photo-1504713285780-0347873527d4?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&cs=tinysrgb&w=400&fit=max&ixid=eyJhcHBfaWQiOjE0NTg5fQ&s=d23e3714174b10a588b45cb14c74ed3e'}
- arr << {title: 'Spain', descr: 'Ut fuga facere tempore iste', pic: 'https://images.unsplash.com/photo-1511527661048-7fe73d85e9a4?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&cs=tinysrgb&w=400&fit=max&ixid=eyJhcHBfaWQiOjE0NTg5fQ&s=c42b43b2532609337ac6e50bf8712f2a'}
- arr << {title: 'Japan', descr: 'Maxime vero sunt consequatur nemo', pic: 'https://images.unsplash.com/photo-1491884662610-dfcd28f30cfb?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&cs=tinysrgb&w=400&fit=max&ixid=eyJhcHBfaWQiOjE0NTg5fQ&s=8d3138eed2abdfdda487a4267b5d1aa1'}
- arr << {title: 'France', descr: 'Dolorum consequuntur at commodi', pic: 'https://images.unsplash.com/photo-1458262488536-98366625ae59?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&cs=tinysrgb&w=400&fit=max&ixid=eyJhcHBfaWQiOjE0NTg5fQ&s=bea133b701eb5072854d295df1c2eb16'}
- arr << {title: 'Mexico', descr: 'Ut fuga facere tempore iste', pic: 'https://images.unsplash.com/photo-1504713285780-0347873527d4?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&cs=tinysrgb&w=400&fit=max&ixid=eyJhcHBfaWQiOjE0NTg5fQ&s=d23e3714174b10a588b45cb14c74ed3e'}
- arr << {title: 'Spain', descr: 'Ut fuga facere tempore iste', pic: 'https://images.unsplash.com/photo-1511527661048-7fe73d85e9a4?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&cs=tinysrgb&w=400&fit=max&ixid=eyJhcHBfaWQiOjE0NTg5fQ&s=c42b43b2532609337ac6e50bf8712f2a'}

%article
  %aside
    %img(src="https://images.unsplash.com/photo-1504083898675-c896ecdae86e?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&cs=tinysrgb&w=400&fit=max&ixid=eyJhcHBfaWQiOjE0NTg5fQ&s=d82a1ac4cbc3696cb88b97d69a1fbb2c" alt="")/
  
  %section
    %h1 Time to travel
    .teaser
     
      - arr.each do |item|
        %figure
          %img(src="#{item[:pic]}" alt="")/
          %figcaption
            %h3= item[:title]
   
    %p
      Lorem ipsum, dolor sit amet consectetur adipisicing elit. Accusantium fugiat harum quas ipsum autem assumenda molestiae iste quidem, illo laboriosam voluptas cupiditate reprehenderit labore eaque necessitatibus molestias. Sed, accusantium illum?
     
    %p
      Lorem ipsum dolor sit amet consectetur, adipisicing elit. Illum facere laudantium ut debitis inventore maiores aliquam optio illo, ipsum aliquid dolorum sapiente quos sequi. Cumque animi explicabo culpa corporis iure.
!

CSS 

              
                @import url("https://fonts.googleapis.com/css?family=Montserrat:400,400i,700")
@import url("https://fonts.googleapis.com/css?family=Lato:400,400i,700")

// 
// font-family: Montserrat, sans-serif
*,
*:before, 
*:after 
  -webkit-box-sizing: inherit
  box-sizing: inherit
html
  box-sizing: border-box
  font-size: 16px
  line-height: 1.5
  
html,
body
  height: 100%

body
  padding: 3% 5%
  font-family: Lato, sans-serif
  position: relative
  &:before
    content: ''
    position: absolute
    top: 0
    left: 0
    height: 100%
    width: 100%
    background-image: url(https://images.unsplash.com/photo-1504083898675-c896ecdae86e?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&cs=tinysrgb&w=400&fit=max&ixid=eyJhcHBfaWQiOjE0NTg5fQ&s=d82a1ac4cbc3696cb88b97d69a1fbb2c)
    background-size: cover
    filter: blur(20px)
    
article
  display: flex
  height: 100%
  position: relative
  background: #fff
  box-shadow: 0px 0px 50px -10px #9a7289 
aside
  width: 30%
  background-color: #ccc
  img
    width: 100%
    height: 100%
    display: block

section
  width: 70%
  overflow: hidden
  padding: 2% 5% 0
  position: relative
  &:before
    position: absolute
    right: 0
    width: 5%
    top: 0
    height: 100%
    background: red
    

h1, h2, h3
  font-family: Montserrat, sans-serif
h1
  font-size: 6vw
  margin: 0 0 2vw 0

h2
  font-size: 2vw
  font-style: italic
  font-weight: 400
  margin: 0 0 1vw 0


@keyframes move
  0%
    transform: translate3d(0px, 0px, 0px)
  100%
    transform: translate3d(-1250px, 0px, 0px)
  

.teaser
  display: flex
  margin: 0 0 3vw 0
  animation: move 20s forwards linear
  
  figure
    overflow: hidden
    margin: 0
    width: 250px
    min-width: 250px
    padding: 0 30px 0 0
    position: relative
    
  img
    width: 220px
    height: 180px
    object-fit: cover
  
  figcaption
    position: absolute
    background-color: #fff
    bottom: 0
    font-size: 20px
    color: #000
    mix-blend-mode: screen
    
    h3
      margin: 0
      padding: 3px 5px  
      width: 100%
!

JS
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999px

Console