JSFiddle - React, Tailwind, and code Playground

by Nick Hulea

HTML

<button id="makeItRainbow" class="btn">  
<span class="txt anim-text-flow-hover">Make It Rainbow</span>
</button>
<button id="makeItRain" class="btn">
<span class="txt anim-text-flow-hover">Make It Rain</span>
</button>

SCSS

body {
  overflow: hidden;
  margin: 0px;
  width: 100vw;
  height: 100vh;
  background: -webkit-gradient(linear, left top, left bottom, from(#ef31f9), to(rgba(125, 185, 232, 0)));
  background: linear-gradient(180deg, #ef31f9, rgba(125, 185, 232, 0));
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr="#ef31f9", endColorstr="#007db9e8", GradientType=0)
}

#app {
  position: relative
}

#app,
body,
html {
  height: 100vh;
  width: 100vw;
  -webkit-box-sizing: border-box;
  box-sizing: border-box
}

body,
html {
  padding: 0;
  margin: 0;
  overflow: hidden
}

#sketch[data-v-923376ae] {
  /* background: -webkit-gradient(linear, left top, left bottom, from(#ef31f9), to(rgba(125, 185, 232, 0))); */
  background: linear-gradient(180deg, #ef31f9, rgba(125, 185, 232, 0));
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr="#ef31f9", endColorstr="#007db9e8", GradientType=0)
}

.btn {
  position: fixed;
  top: 0;
  margin: 1rem;
  -webkit-appearance: none;
  border: none;
  outline: none;
  padding: 10px 20px;
  cursor: pointer;
  background: none;
  color: #fff;
  font-weight: 900;
  text-transform: uppercase;
}

#makeItRain {
  right: 0;
}

#makeItRainbow {
  left: 0;
}

.rainbow-text {
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-image: -webkit-gradient(linear, left top, left bottom, color-stop(0.00, red), color-stop(16%, orange), color-stop(32%, yellow), color-stop(48%, green), color-stop(60%, blue), color-stop(76%, indigo), color-stop(1.00, violet));
}

/*
 * Animation module with all animation code
 */

.anim-text-flow,
.anim-text-flow-hover:hover {
  /*
   * Animation variables
   */
  $animationSteps: 250;
  $animationDuration: 10;
  $animationElement: span;
  $animationElementsCount: 100;
  $delayBetweenLetters: 0.1;
  /*
   * Elements settings
   */
  #{$animationElement} {
    animation-name: anim-text-flow-keys;
    animation-duration: #{$animationDuration}s;
   ...

JavaScript

$('.txt').html(function(i, html) {
  var chars = $.trim(html).split("");

  return '<span>' + chars.join('</span><span>') + '</span>';
});