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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.

!
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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HTML 

              
                <div class="toast__container">
<div class="toast__cell">
<div class="toast toast--green">
  <div class="toast__icon">
    <svg version="1.1" class="toast__svg" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 512 512" style="enable-background:new 0 0 512 512;" xml:space="preserve">
<g><g><path d="M504.502,75.496c-9.997-9.998-26.205-9.998-36.204,0L161.594,382.203L43.702,264.311c-9.997-9.998-26.205-9.997-36.204,0    c-9.998,9.997-9.998,26.205,0,36.203l135.994,135.992c9.994,9.997,26.214,9.99,36.204,0L504.502,111.7    C514.5,101.703,514.499,85.494,504.502,75.496z"></path>
	</g></g>
    </svg>
  </div>
  <div class="toast__content">
    <p class="toast__type">Success</p>
    <p class="toast__message">Anyone with access can view your invited visitors.</p>
  </div>
  <div class="toast__close">
    <svg version="1.1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 15.642 15.642" xmlns:xlink="http://www.w3.org/1999/xlink" enable-background="new 0 0 15.642 15.642">
  <path fill-rule="evenodd" d="M8.882,7.821l6.541-6.541c0.293-0.293,0.293-0.768,0-1.061  c-0.293-0.293-0.768-0.293-1.061,0L7.821,6.76L1.28,0.22c-0.293-0.293-0.768-0.293-1.061,0c-0.293,0.293-0.293,0.768,0,1.061  l6.541,6.541L0.22,14.362c-0.293,0.293-0.293,0.768,0,1.061c0.147,0.146,0.338,0.22,0.53,0.22s0.384-0.073,0.53-0.22l6.541-6.541  l6.541,6.541c0.147,0.146,0.338,0.22,0.53,0.22c0.192,0,0.384-0.073,0.53-0.22c0.293-0.293,0.293-0.768,0-1.061L8.882,7.821z"></path>
</svg>
  </div>
</div>


<div class="toast toast--blue add-margin">
  <div class="toast__icon">
<svg version="1.1" class="toast__svg" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 32 32" style="enable-background:new 0 0 32 32;" xml:space="preserve">
<g>
	<g id="info">
		<g>
			<path  d="M10,16c1.105,0,2,0.895,2,2v8c0,1.105-0.895,2-2,2H8v4h16v-4h-1.992c-1.102,0-2-0.895-2-2L20,12H8     v4H10z"></path>
			<circle  cx="16" cy="4" r="4"></circle>
		</g>
	</g>
</g>

    </svg>
  </div>
  <div class="toast__content">
    <p class="toast__type">Info</p>
    <p class="toast__message">Anyone with access can view your invited visitors.</p>
  </div>
  <div class="toast__close">
    <svg version="1.1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 15.642 15.642" xmlns:xlink="http://www.w3.org/1999/xlink" enable-background="new 0 0 15.642 15.642">
  <path fill-rule="evenodd" d="M8.882,7.821l6.541-6.541c0.293-0.293,0.293-0.768,0-1.061  c-0.293-0.293-0.768-0.293-1.061,0L7.821,6.76L1.28,0.22c-0.293-0.293-0.768-0.293-1.061,0c-0.293,0.293-0.293,0.768,0,1.061  l6.541,6.541L0.22,14.362c-0.293,0.293-0.293,0.768,0,1.061c0.147,0.146,0.338,0.22,0.53,0.22s0.384-0.073,0.53-0.22l6.541-6.541  l6.541,6.541c0.147,0.146,0.338,0.22,0.53,0.22c0.192,0,0.384-0.073,0.53-0.22c0.293-0.293,0.293-0.768,0-1.061L8.882,7.821z"></path>
</svg>
  </div>
</div>

<div class="toast toast--yellow add-margin">
  <div class="toast__icon">
<svg version="1.1" class="toast__svg" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 301.691 301.691" style="enable-background:new 0 0 301.691 301.691;" xml:space="preserve">
<g>
	<polygon points="119.151,0 129.6,218.406 172.06,218.406 182.54,0  "></polygon>
	<rect x="130.563" y="261.168" width="40.525" height="40.523"></rect>
</g>
    </svg>
  </div>
  <div class="toast__content">
    <p class="toast__type">Success</p>
    <p class="toast__message">Anyone with access can view your invited visitors.</p>
  </div>
  <div class="toast__close">
    <svg version="1.1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 15.642 15.642" xmlns:xlink="http://www.w3.org/1999/xlink" enable-background="new 0 0 15.642 15.642">
  <path fill-rule="evenodd" d="M8.882,7.821l6.541-6.541c0.293-0.293,0.293-0.768,0-1.061  c-0.293-0.293-0.768-0.293-1.061,0L7.821,6.76L1.28,0.22c-0.293-0.293-0.768-0.293-1.061,0c-0.293,0.293-0.293,0.768,0,1.061  l6.541,6.541L0.22,14.362c-0.293,0.293-0.293,0.768,0,1.061c0.147,0.146,0.338,0.22,0.53,0.22s0.384-0.073,0.53-0.22l6.541-6.541  l6.541,6.541c0.147,0.146,0.338,0.22,0.53,0.22c0.192,0,0.384-0.073,0.53-0.22c0.293-0.293,0.293-0.768,0-1.061L8.882,7.821z"></path>
</svg>
  </div>
</div>
</div>
</div>
!

CSS 

              
                @import url('https://fonts.googleapis.com/css?family=Raleway:300,300i,400,400i,500,500i,600,600i,700,700i,800,800i');

html, body{
  height:100%;
  width:100%;
  font-family: 'Raleway', sans-serif;
  background-color:#efefef;
  display: table;
  text-align: center;

}

.toast__container {
    display: table-cell;
    vertical-align: middle;
}

.toast__cell{
  display:inline-block;
}

.add-margin{
  margin-top:20px;
}

.toast__svg{
  fill:#fff;
}

.toast {
  text-align:left;
    padding: 21px 0;
    background-color:#fff;
    border-radius:4px;
    max-width: 500px;
    top: 0px;
    position:relative;
    box-shadow: 1px 7px 14px -5px rgba(0,0,0,0.2);
}


.toast:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
  border-top-left-radius:4px;
  border-bottom-left-radius: 4px;

}

.toast__icon{
  position:absolute;
  top:50%;
  left:22px;
  transform:translateY(-50%);
  width:14px;
  height:14px;
  padding: 7px;
  border-radius:50%;
  display:inline-block;
}

.toast__type {
  color: #3e3e3e;
  font-weight: 700;
  margin-top: 0;
  margin-bottom: 8px;
}

.toast__message {
    font-size: 14px;
    margin-top: 0;
  margin-bottom: 0;
    color: #878787;
}

.toast__content{
  padding-left:70px;
  padding-right:60px;
}

.toast__close {
    position: absolute;
    right: 22px;
    top: 50%;
    width: 14px;
    cursor:pointer;
    height: 14px;
  fill:#878787;
    transform: translateY(-50%);
}

.toast--green .toast__icon{
  background-color:#2BDE3F;
}

.toast--green:before{
  background-color:#2BDE3F;
}

.toast--blue .toast__icon{
  background-color:#1D72F3;
}

.toast--blue:before{
  background-color:#1D72F3;
}

.toast--yellow .toast__icon{
  background-color:#FFC007;
}

.toast--yellow:before{
  background-color:#FFC007;
}
!

JS 

              
                jQuery(document).ready(function(){
  jQuery('.toast__close').click(function(e){
    e.preventDefault();
    var parent = $(this).parent('.toast');
    parent.fadeOut("slow", function() { $(this).remove(); } );
  });
});
!
999px

Console