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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

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.

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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).

Add External Stylesheets/Pens

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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.

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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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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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HTML 

              
                <header>
    <p>Worked on all modern browers</p>
    <h1>CSS based responsive timeline</h1>
</header>

<ul class="timeline">
  <!-- Item 1 -->
  <li>
    <div class="direction-r">
      <div class="flag-wrapper">
        <span class="hexa"></span>
        <span class="flag">Lorem ipsum.</span>
        <span class="time-wrapper"><span class="time">Feb 2015</span></span>
      </div>
      <div class="desc">Lorem ipsum Nisi labore aute do aute culpa magna nulla voluptate exercitation deserunt proident.</div>
    </div>
  </li>

  <!-- Item 2 -->
  <li>
    <div class="direction-l">
      <div class="flag-wrapper">
        <span class="hexa"></span>
        <span class="flag">Lorem ipsum Anim.</span>
        <span class="time-wrapper"><span class="time">Dec 2014</span></span>
      </div>
      <div class="desc">Lorem ipsum In ut sit in dolor nisi ex magna eu anim anim tempor dolore aliquip enim cupidatat laborum dolore.</div>
    </div>
  </li>

  <!-- Item 3 -->
  <li>
    <div class="direction-r">
      <div class="flag-wrapper">
        <span class="hexa"></span>
        <span class="flag">Lorem Occaecat.</span>
        <span class="time-wrapper"><span class="time">July 2014</span></span>
      </div>
      <div class="desc">Lorem ipsum Minim labore Ut cupidatat quis qui deserunt proident fugiat pariatur cillum cupidatat reprehenderit sit id dolor consectetur ut.</div>
    </div>
  </li>
</ul>
!

CSS 

              
                @import url(https://fonts.googleapis.com/css?family=Raleway:400,900);

body{
  font-family: 'Raleway', sans-serif;
  color: #333;
}

header h1{
  text-align: center;
  font-weight: bold;
  margin-top: 0;
}
  
 header p{
   text-align: center;
   margin-bottom: 0;
 }

.hexa{
  border: 0px;
  float: left;
  text-align: center;
  height: 35px;
  width: 60px;
  font-size: 22px;
  background: #f0f0f0;
  color: #3c3c3c;
  position: relative;
  margin-top: 15px;
}

.hexa:before{
  content: ""; 
  position: absolute; 
  left: 0; 
  width: 0; 
  height: 0;
  border-bottom: 15px solid #f0f0f0;
  border-left: 30px solid transparent;
  border-right: 30px solid transparent;
  top: -15px;
}

.hexa:after{
  content: ""; 
  position: absolute; 
  left: 0; 
  width: 0; 
  height: 0;
  border-left: 30px solid transparent;
  border-right: 30px solid transparent;
  border-top: 15px solid #f0f0f0;
  bottom: -15px;
}

.timeline {
  position: relative;
  padding: 0;
  width: 100%;
  margin-top: 20px;
  list-style-type: none;
}

.timeline:before {
  position: absolute;
  left: 50%;
  top: 0;
  content: ' ';
  display: block;
  width: 2px;
  height: 100%;
  margin-left: -1px;
  background: rgb(213,213,213);
  background: -moz-linear-gradient(top, rgba(213,213,213,0) 0%, rgb(213,213,213) 8%, rgb(213,213,213) 92%, rgba(213,213,213,0) 100%);
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(30,87,153,1)), color-stop(100%,rgba(125,185,232,1)));
  background: -webkit-linear-gradient(top, rgba(213,213,213,0) 0%, rgb(213,213,213) 8%, rgb(213,213,213) 92%, rgba(213,213,213,0) 100%);
  background: -o-linear-gradient(top, rgba(213,213,213,0) 0%, rgb(213,213,213) 8%, rgb(213,213,213) 92%, rgba(213,213,213,0) 100%);
  background: -ms-linear-gradient(top, rgba(213,213,213,0) 0%, rgb(213,213,213) 8%, rgb(213,213,213) 92%, rgba(213,213,213,0) 100%);
  background: linear-gradient(to bottom, rgba(213,213,213,0) 0%, rgb(213,213,213) 8%, rgb(213,213,213) 92%, rgba(213,213,213,0) 100%);
  z-index: 5;
}

.timeline li {
  padding: 2em 0;
}

.timeline .hexa{
  width: 16px;
  height: 10px;
  position: absolute;
  background: #00c4f3;
  z-index: 5;
  left: 0;
  right: 0;
  margin-left:auto;
  margin-right:auto;
  top: -30px;
  margin-top: 0;
}

.timeline .hexa:before {
  border-bottom: 4px solid #00c4f3;
  border-left-width: 8px;
  border-right-width: 8px;
  top: -4px;
}

.timeline .hexa:after {
  border-left-width: 8px;
  border-right-width: 8px;
  border-top: 4px solid #00c4f3;
  bottom: -4px;
}

.direction-l,
.direction-r {
  float: none;
  width: 100%;
  text-align: center;
}

.flag-wrapper {
  text-align: center;
  position: relative;
}

.flag {
  position: relative;
  display: inline;
  background: rgb(255,255,255);
  font-weight: 600;
  z-index: 15;
  padding: 6px 10px;
  text-align: left;
  border-radius: 5px;
}

.direction-l .flag:after,
.direction-r .flag:after {
  content: "";
  position: absolute;
  left: 50%;
  top: -15px;
  height: 0;
  width: 0;
  margin-left: -8px;
  border: solid transparent;
  border-bottom-color: rgb(255,255,255);
  border-width: 8px;
  pointer-events: none;
}

.direction-l .flag {
  -webkit-box-shadow: -1px 1px 1px rgba(0,0,0,0.15), 0 0 1px rgba(0,0,0,0.15);
  -moz-box-shadow: -1px 1px 1px rgba(0,0,0,0.15), 0 0 1px rgba(0,0,0,0.15);
  box-shadow: -1px 1px 1px rgba(0,0,0,0.15), 0 0 1px rgba(0,0,0,0.15);
}

.direction-r .flag {
  -webkit-box-shadow: 1px 1px 1px rgba(0,0,0,0.15), 0 0 1px rgba(0,0,0,0.15);
  -moz-box-shadow: 1px 1px 1px rgba(0,0,0,0.15), 0 0 1px rgba(0,0,0,0.15);
  box-shadow: 1px 1px 1px rgba(0,0,0,0.15), 0 0 1px rgba(0,0,0,0.15);
}

.time-wrapper {
  display: block;
  position: relative;
  margin: 4px 0 0 0;
  z-index: 14;
  line-height: 1em;
  vertical-align: middle;
  color: #fff;
}

.direction-l .time-wrapper {
  float: none;
}

.direction-r .time-wrapper {
  float: none;
}

.time {
  background: #00c4f3;
  display: inline-block;
  padding: 8px;
}

.desc {
  position: relative;
  margin: 1em 0 0 0;
  padding: 1em;
  background: rgb(254,254,254);
  -webkit-box-shadow: 0 0 1px rgba(0,0,0,0.20);
  -moz-box-shadow: 0 0 1px rgba(0,0,0,0.20);
  box-shadow: 0 0 1px rgba(0,0,0,0.20);
  z-index: 15;
}

.direction-l .desc,
.direction-r .desc {
  position: relative;
  margin: 1em 1em 0 1em;
  padding: 1em;
  z-index: 15;
}

@media(min-width: 768px){
  .timeline {
    width: 660px;
    margin: 0 auto;
    margin-top: 20px;
  }

  .timeline li:after {
    content: "";
    display: block;
    height: 0;
    clear: both;
    visibility: hidden;
  }
  
  .timeline .hexa {
    left: -28px;
    right: auto;
    top: 8px;
  }

  .timeline .direction-l .hexa {
    left: auto;
    right: -28px;
  }

  .direction-l {
    position: relative;
    width: 310px;
    float: left;
    text-align: right;
  }

  .direction-r {
    position: relative;
    width: 310px;
    float: right;
    text-align: left;
  }

  .flag-wrapper {
    display: inline-block;
  }
  
  .flag {
    font-size: 18px;
  }

  .direction-l .flag:after {
    left: auto;
    right: -16px;
    top: 50%;
    margin-top: -8px;
    border: solid transparent;
    border-left-color: rgb(254,254,254);
    border-width: 8px;
  }

  .direction-r .flag:after {
    top: 50%;
    margin-top: -8px;
    border: solid transparent;
    border-right-color: rgb(254,254,254);
    border-width: 8px;
    left: -8px;
  }

  .time-wrapper {
    display: inline;
    vertical-align: middle;
    margin: 0;
  }

  .direction-l .time-wrapper {
    float: left;
  }

  .direction-r .time-wrapper {
    float: right;
  }

  .time {
    padding: 5px 10px;
  }

  .direction-r .desc {
    margin: 1em 0 0 0.75em;
  }
}

@media(min-width: 992px){
  .timeline {
    width: 800px;
    margin: 0 auto;
    margin-top: 20px;
  }

  .direction-l {
    position: relative;
    width: 380px;
    float: left;
    text-align: right;
  }

  .direction-r {
    position: relative;
    width: 380px;
    float: right;
    text-align: left;
  }
}
!

JS
!
999px

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