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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>

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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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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 

              
                <div class="js-container container" style="top:0px !important;"></div>

  <div style="text-align:center;margin-top:30px;position:  fixed;width:100%;height:100%;top:0px;left:0px;">
    <div class="checkmark-circle">
      <div class="background"></div>
      <div class="checkmark draw"></div>
    </div>
    <h1>Congratulations!</h1>
    <p>You are all set. Well done!</p>
    <button class="submit-btn" type="submit" onclick="alert('🥺🥺🥺🥺🥺\n Oh no you didn\'t!!!!!!!');">Continue</button>
  </div>
!

CSS 

              
                body {
  font-family: 'Roboto';
  margin: 0;
  padding: 0;
}

@keyframes confetti-slow {
  0% { transform: translate3d(0, 0, 0) rotateX(0) rotateY(0); }
  
  100% { transform: translate3d(25px, 105vh, 0) rotateX(360deg) rotateY(180deg); }
}

@keyframes confetti-medium {
  0% { transform: translate3d(0, 0, 0) rotateX(0) rotateY(0); }
  
  100% { transform: translate3d(100px, 105vh, 0) rotateX(100deg) rotateY(360deg); }
}

@keyframes confetti-fast {
  0% { transform: translate3d(0, 0, 0) rotateX(0) rotateY(0); }
  
  100% { transform: translate3d(-50px, 105vh, 0) rotateX(10deg) rotateY(250deg); }
}

.container {
  width: 100vw;
  height: 100vh;
  background: #ffffff;
  border:1px solid white;
  display:fixed;
  top:0px;
}

.confetti-container {
  perspective: 700px;
  position: absolute;
  overflow: hidden;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
}

.confetti {
  position: absolute;
  z-index: 1;
  top: -10px;
  border-radius: 0%;

  &--animation-slow {
    animation: confetti-slow 2.25s linear 1 forwards;
  }
  
  &--animation-medium {
    animation: confetti-medium 1.75s linear 1 forwards;
  }
  
  &--animation-fast {
    animation: confetti-fast 1.25s linear 1 forwards;
  }
}





/* Checkmark */
.checkmark-circle {
  width: 150px;
  height: 150px;
  position: relative;
  display: inline-block;
  vertical-align: top;
  margin-left: auto;
  margin-right: auto;
}
.checkmark-circle .background {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  background: #00C09D;
  position: absolute;
}
.checkmark-circle .checkmark {
  border-radius: 5px;
}
.checkmark-circle .checkmark.draw:after {
  -webkit-animation-delay: 100ms;
  -moz-animation-delay: 100ms;
  animation-delay: 100ms;
  -webkit-animation-duration: 3s;
  -moz-animation-duration: 3s;
  animation-duration: 3s;
  -webkit-animation-timing-function: ease;
  -moz-animation-timing-function: ease;
  animation-timing-function: ease;
  -webkit-animation-name: checkmark;
  -moz-animation-name: checkmark;
  animation-name: checkmark;
  -webkit-transform: scaleX(-1) rotate(135deg);
  -moz-transform: scaleX(-1) rotate(135deg);
  -ms-transform: scaleX(-1) rotate(135deg);
  -o-transform: scaleX(-1) rotate(135deg);
  transform: scaleX(-1) rotate(135deg);
  -webkit-animation-fill-mode: forwards;
  -moz-animation-fill-mode: forwards;
  animation-fill-mode: forwards;
}
.checkmark-circle .checkmark:after {
  opacity: 1;
  height: 75px;
  width: 37.5px;
  -webkit-transform-origin: left top;
  -moz-transform-origin: left top;
  -ms-transform-origin: left top;
  -o-transform-origin: left top;
  transform-origin: left top;
  border-right: 15px solid white;
  border-top: 15px solid white;
  border-radius: 2.5px !important;
  content: '';
  left: 25px;
  top: 75px;
  position: absolute;
}

@-webkit-keyframes checkmark {
  0% {
    height: 0;
    width: 0;
    opacity: 1;
  }
  20% {
    height: 0;
    width: 37.5px;
    opacity: 1;
  }
  40% {
    height: 75px;
    width: 37.5px;
    opacity: 1;
  }
  100% {
    height: 75px;
    width: 37.5px;
    opacity: 1;
  }
}
@-moz-keyframes checkmark {
  0% {
    height: 0;
    width: 0;
    opacity: 1;
  }
  20% {
    height: 0;
    width: 37.5px;
    opacity: 1;
  }
  40% {
    height: 75px;
    width: 37.5px;
    opacity: 1;
  }
  100% {
    height: 75px;
    width: 37.5px;
    opacity: 1;
  }
}
@keyframes checkmark {
  0% {
    height: 0;
    width: 0;
    opacity: 1;
  }
  20% {
    height: 0;
    width: 37.5px;
    opacity: 1;
  }
  40% {
    height: 75px;
    width: 37.5px;
    opacity: 1;
  }
  100% {
    height: 75px;
    width: 37.5px;
    opacity: 1;
  }
}



.submit-btn {
    height: 45px;
    width: 200px;
    font-size: 15px;
    background-color: #00c09d;
    border: 1px solid #00ab8c;
    color: #fff;
    border-radius: 5px;
    box-shadow: 0 2px 4px 0 rgba(87,71,81,.2);
    cursor: pointer;
    transition: all 2s ease-out;
    transition: all .2s ease-out;
}

.submit-btn:hover {
    background-color: #2ca893;
    transition: all .2s ease-out;
}
!

JS 

              
                const Confettiful = function(el) {
  this.el = el;
  this.containerEl = null;
  
  this.confettiFrequency = 3;
  this.confettiColors = ['#EF2964', '#00C09D', '#2D87B0', '#48485E','#EFFF1D'];
  this.confettiAnimations = ['slow', 'medium', 'fast'];
  
  this._setupElements();
  this._renderConfetti();
};

Confettiful.prototype._setupElements = function() {
  const containerEl = document.createElement('div');
  const elPosition = this.el.style.position;
  
  if (elPosition !== 'relative' || elPosition !== 'absolute') {
    this.el.style.position = 'relative';
  }
  
  containerEl.classList.add('confetti-container');
  
  this.el.appendChild(containerEl);
  
  this.containerEl = containerEl;
};

Confettiful.prototype._renderConfetti = function() {
  this.confettiInterval = setInterval(() => {
    const confettiEl = document.createElement('div');
    const confettiSize = (Math.floor(Math.random() * 3) + 7) + 'px';
    const confettiBackground = this.confettiColors[Math.floor(Math.random() * this.confettiColors.length)];
    const confettiLeft = (Math.floor(Math.random() * this.el.offsetWidth)) + 'px';
    const confettiAnimation = this.confettiAnimations[Math.floor(Math.random() * this.confettiAnimations.length)];
    
    confettiEl.classList.add('confetti', 'confetti--animation-' + confettiAnimation);
    confettiEl.style.left = confettiLeft;
    confettiEl.style.width = confettiSize;
    confettiEl.style.height = confettiSize;
    confettiEl.style.backgroundColor = confettiBackground;
    
    confettiEl.removeTimeout = setTimeout(function() {
      confettiEl.parentNode.removeChild(confettiEl);
    }, 3000);
    
    this.containerEl.appendChild(confettiEl);
  }, 25);
};

window.confettiful = new Confettiful(document.querySelector('.js-container'));
!
999px

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