Pen Settings



CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

+ add another resource


Babel is required to process package imports. If you need a different preprocessor remove all packages first.

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.

+ add another resource


Save Automatically?

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.


                <a href="#" class="css3dbutton">Subscribe</a>




    background: darkred; /* background color of button */
    color: white;
    text-decoration: none;
    font: bold 28px Arial; /* font size and style */
    position: relative;
		top: 0; /* anchor main button's position */
    bottom: -12px; /* Depth of 3D effect. :after pseudo element inherits
 this value so it's animated in Chrome. See: */
		margin-bottom: 12px;
    -moz-box-shadow: 0 -15px 5px darkred inset;
    -webkit-box-shadow: 0 -15px 5px darkred inset;
    box-shadow: 0 -15px 5px darkred inset;
    -moz-transition: all 0.2s ease-in-out;
    -o-transition: all 0.2s ease-in-out;
    -webkit-transition: all 0.2s ease-in-out;
    transition: all 0.2s ease-in-out;

a.css3dbutton, a.css3dbutton:after {
    display: inline-block;
    padding: 10px 15px; /* vertical and horizontal padding of button */
    -moz-border-radius: 8px/15px;
    -webkit-border-radius: 8px/15px;
    border-radius: 8px/15px;
    outline: none;

a.css3dbutton:after { /* pseudo element to construct 3D side of button 
    content: "";
    position: absolute;
    padding: 0;
    z-index: -1;
    bottom: inherit; /* Inherit main button bottom value to animate it. 
See: */
    left: 0;
    width: 100%;
    height: 100%;
    background: #6e0e0c; /* background color of 3D effect */
    -moz-box-shadow: 1px 0 3px gray;
    -webkit-box-shadow: 1px 0 3px gray;
    box-shadow: 1px 0 3px gray;

a.css3dbutton:hover {
    -moz-box-shadow: 0 25px 5px rgba(182, 64, 61, 0.7) inset;
    -webkit-box-shadow: 0 25px 5px rgba(182, 64, 61, 0.7) inset;
    box-shadow: 0 25px 5px rgba(182, 64, 61, 0.7) inset;
    background: #bc3835; /* background color when mouse rolls over 
button */

a.css3dbutton:active {
    top: 12px; /* shift button down 12px when depressed. Change 12px to 
match button's "bottom" property above */
    bottom: 0;
    -moz-box-shadow: 0 -20px 5px darkred inset, 1px 1px 2px #eee;
    -webkit-box-shadow: 0 -20px 5px darkred inset, 1px 1px 2px #eee;
    box-shadow: 0 -20px 5px darkred inset, 1px 1px 2px #eee;