@import url("https://fonts.googleapis.com/css?family=Poppins:300,800&display=swap");

* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}
body {
  min-height: 100vh;
  background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="150" height="142.5"><g transform="translate(25 23.75)" opacity="0.1" stroke="hsl(0, 0%, 50%)" stroke-width="10" stroke-linecap="round" stroke-linejoin="round"><g transform="translate(50 47.5) rotate(60)"><g transform="translate(-50 -47.5)"><path fill="none" d="M65 5a30 30 0 010 60"/><path fill="currentColor" d="M45 65l14-14v28z"/><g><path fill="none" d="M35 90a30 30 0 010-60"/><path fill="currentColor" d="M55 30L41 44V16z"/></g></g></g></g></svg>'),
    #fbfbfb;
  background-size: 10%;
  color: hsl(0, 0%, 11%);
  font-family: "Poppins", sans-serif;
  /* center the contents horizontally */
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 0.5rem 0;
}
/* display the controls in a row, pushing the buttons on either side */
.controls {
  width: 90vw;
  max-width: 500px;
  margin: 0.5rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
h2 {
  text-transform: uppercase;
  font-weight: 300;
  font-size: 1.75rem;
}
button {
  font-weight: 800;
  text-align: center;
  font-family: inherit;
  color: inherit;
  font-size: 1.25rem;
  background: none;
  border: none;
  outline: none;
}
button svg {
  display: block;
  width: 3.5em;
  height: auto;
}
/* when the button is focused underline the span element */
button:focus span {
  text-decoration: underline;
}
/* when the button is hovered or being focused on, rotate the nested svg
! only as the hover/focus occurs
*/
button:hover svg,
button:focus svg {
  transition: transform 0.5s cubic-bezier(0.645, 0.045, 0.355, 1);
  transform: rotate(1turn);
}
/* rotate the first svg in the opposite direction */
button:first-of-type:hover svg,
button:first-of-type:focus svg {
  transition: transform 0.5s cubic-bezier(0.645, 0.045, 0.355, 1);
  transform: rotate(-1turn);
}
/* add a transition to the canvas to rotate the element smoothly */
canvas {
  width: 90vw;
  max-width: 450px;
  display: block;
  transition: transform 1s cubic-bezier(0.445, 0.05, 0.55, 0.95);
}

/* code from CSS Range Slide, coded by Sean Stopnik */
.range-slider {
  margin: 60px 0 0 0%;
}

.range-slider {
  width: 100%;
}

.range-slider__range {
  -webkit-appearance: none;
  width: calc(100% - (73px));
  height: 10px;
  border-radius: 5px;
  background: #d7dcdf;
  outline: none;
  padding: 0;
  margin: 0;
}
.range-slider__range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #2c3e50;
  cursor: pointer;
  -webkit-transition: background 0.15s ease-in-out;
  transition: background 0.15s ease-in-out;
}
.range-slider__range::-webkit-slider-thumb:hover {
  background: #1abc9c;
}
.range-slider__range:active::-webkit-slider-thumb {
  background: #1abc9c;
}
.range-slider__range::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border: 0;
  border-radius: 50%;
  background: #2c3e50;
  cursor: pointer;
  -moz-transition: background 0.15s ease-in-out;
  transition: background 0.15s ease-in-out;
}
.range-slider__range::-moz-range-thumb:hover {
  background: #1abc9c;
}
.range-slider__range:active::-moz-range-thumb {
  background: #1abc9c;
}
.range-slider__range:focus::-webkit-slider-thumb {
  box-shadow: 0 0 0 3px #fff, 0 0 0 6px #1abc9c;
}

.range-slider__value {
  display: inline-block;
  position: relative;
  width: 60px;
  color: #fff;
  line-height: 20px;
  text-align: center;
  border-radius: 3px;
  background: #2c3e50;
  padding: 5px 10px;
  margin-left: 8px;
}
.range-slider__value:after {
  position: absolute;
  top: 8px;
  left: -7px;
  width: 0;
  height: 0;
  border-top: 7px solid transparent;
  border-right: 7px solid #2c3e50;
  border-bottom: 7px solid transparent;
  content: "";
}

::-moz-range-track {
  background: #d7dcdf;
  border: 0;
}

input::-moz-focus-inner,
input::-moz-focus-outer {
  border: 0;
}