octocatstartv

Pen Settings

CSS Base

Vendor Prefixing

Add External CSS

These stylesheets will be added in this order and before the code you write in the CSS editor. You can also add another Pen here, and it will pull the CSS from it. Try typing "font" or "ribbon" below.

Quick-add: + add another resource

Add External JavaScript

These scripts will run in this order and before the code in the JavaScript editor. You can also link to another Pen here, and it will run the JavaScript from it. Also try typing the name of any popular library.

Quick-add: + add another resource

Code Indentation

     

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Want a Run Button?

If active, the preview will update automatically when you change code.

            
              <div class="btn">
  <div class="btn-back">
    <p>Are you sure you want to do that?</p>
    <button class="yes">Yes</button>
    <button class="no">No</button>
  </div>
  <div class="btn-front">Delete</div>
</div>

<p class="description">Try clicking different sides of the button – <a href="http://lab.hakim.se/" target="_blank">lab.hakim.se</a></p>
            
          
!
            
              $transition-duration: 0.8s;
$transition-easing: cubic-bezier(0.230, 1.000, 0.320, 1.000);
$bounce-easing: cubic-bezier(0.175, 0.885, 0.320, 1.275);
$closed-width: 200px;
$closed-height: 80px;
$opened-width: 400px;
$opened-height: 160px;

@import url(http://fonts.googleapis.com/css?family=Roboto:400,700);

html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  user-select: none;
}

body {
  display: flex;
  font-family: Roboto, "Helvetica Neue", sans-serif;
  font-size: 18px;
  perspective: 1000px;
  background-color: #f5f5f5;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.description {
  margin-top: 50px;
  text-align: center;
  color: #999;
  transition: opacity 0.3s ease;
}

.description a {
  color: #4A9DF6;
  text-decoration: none;
}

.btn.is-open ~ .description {
  opacity: 0;
}

.btn {
  display: block;
  position: relative;
  width: $closed-width;
  height: $closed-height;
  transition: width $transition-duration $transition-easing,
              height $transition-duration $transition-easing,
              transform $transition-duration $bounce-easing;
  transform-style: preserve-3d;
  transform-origin: 50% 50%;
  text-align: center;
}

.btn-front {
  position: absolute;
  display: block;
  width: 100%;
  height: 100%;
  line-height: $closed-height;
  background-color: #F44336;
  color: #fff;
  cursor: pointer;
  backface-visibility: hidden;
  -webkit-tap-highlight-color: rgba( 0, 0, 0, 0 );
  transition: background 0.15s ease,
              line-height $transition-duration $transition-easing;
}
.btn-front:hover {
  background-color: lighten(#F44336, 10%);
}
.btn.is-open .btn-front {
  pointer-events: none;
  line-height: $opened-height;
}

.btn-back {
  position: absolute;
  width: 100%;
  height: 100%;
  background-color: #eee;
  color: #222;
  transform: translateZ(-2px) rotateX(180deg);
  overflow: hidden;
  transition: box-shadow $transition-duration ease;
}
.btn-back p {
  margin-top: 27px;
  margin-bottom: 25px;
}
.btn-back button {
  padding: 12px 20px;
  width: 30%;
  margin: 0 5px;
  background-color: transparent;
  border: 0;
  border-radius: 2px;
  font-size: 1em;
  cursor: pointer;
  -webkit-appearance: none;
  -webkit-tap-highlight-color: rgba( 0, 0, 0, 0 );
  transition: background 0.15s ease;
  
  &:focus {
    outline: 0;
  }
  
  &.yes {
    background-color: #2196F3;
    color: #fff;
    
    &:hover {
      background-color: lighten(#2196F3, 10%);
    }
  }
  
  &.no {
    color: #2196F3;
    
    &:hover {
      background-color: #ddd;
    }
  }
}

.btn.is-open .btn-back {
  box-shadow: 0 8px 25px rgba(0,0,0,0.4);
}

.btn[data-direction="left"] .btn-back,
.btn[data-direction="right"] .btn-back {
  transform: translateZ(-2px) rotateY(180deg);
}

.btn.is-open {
  width: $opened-width;
  height: $opened-height;
}

.btn[data-direction="top"].is-open {
  transform: rotateX(180deg);
}

.btn[data-direction="right"].is-open {
  transform: rotateY(180deg);
}

.btn[data-direction="bottom"].is-open {
  transform: rotateX(-180deg);
}

.btn[data-direction="left"].is-open {
  transform: rotateY(-180deg);
}

            
          
!
            
              var btn = document.querySelector( '.btn' );

var btnFront = btn.querySelector( '.btn-front' ),
    btnYes = btn.querySelector( '.btn-back .yes' ),
    btnNo = btn.querySelector( '.btn-back .no' );

btnFront.addEventListener( 'click', function( event ) {
  var mx = event.clientX - btn.offsetLeft,
      my = event.clientY - btn.offsetTop;

  var w = btn.offsetWidth,
      h = btn.offsetHeight;
	
  var directions = [
    { id: 'top', x: w/2, y: 0 },
    { id: 'right', x: w, y: h/2 },
    { id: 'bottom', x: w/2, y: h },
    { id: 'left', x: 0, y: h/2 }
  ];
  
  directions.sort( function( a, b ) {
    return distance( mx, my, a.x, a.y ) - distance( mx, my, b.x, b.y );
  } );
  
  btn.setAttribute( 'data-direction', directions.shift().id );
  btn.classList.add( 'is-open' );

} );

btnYes.addEventListener( 'click', function( event ) {	
  btn.classList.remove( 'is-open' );
} );

btnNo.addEventListener( 'click', function( event ) {
  btn.classList.remove( 'is-open' );
} );

function distance( x1, y1, x2, y2 ) {
  var dx = x1-x2;
  var dy = y1-y2;
  return Math.sqrt( dx*dx + dy*dy );
}
            
          
!
999px
Close

Asset uploading is a PRO feature.

As a PRO member, you can drag-and-drop upload files here to use as resources. Images, Libraries, JSON data... anything you want. You can even edit them anytime, like any other code on CodePen.

Go PRO

Loading ..................

Console