:root {
  --background: hsl(0, 0%, 12%);
  --text: hsl(0, 0%, 80%);
  --clear: hsl(0, 0%, 65%);
  --disabled: hsl(0, 0%, 35%);
  --purple: #bb73e6;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: sans-serif;
  letter-spacing: 1.5px;
  background: var(--background);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-content: center;
  width: 100vw;
  height: 100vh;
  color: var(--text);
  padding: 2.5rem 0;
}

button {
  user-select: none;
  letter-spacing: 0;
  color: white;
  outline: none;
  border: none;
}

.button:first-letter {
  text-transform: uppercase;
}

.button.unpimp:before {
  content: 'Un';
}

.button {
  background: var(--background);
  font-family: serif;
  width: 70%;
  text-align: center;
}

.one {
  font-size: 75px;
}

.two {
  font-family: sans-serif;
}

.three {
  letter-spacing: 15px;
}

.four {
  padding: 20px 40px;
  border: solid 1px var(--clear);
}

.five {
  border-radius: 100px;
}

.six {
  border: none;
  box-shadow: 8px 8px 15px rgba(255, 255, 255, 0.075),
    -10px -10px 15px rgba(0, 0, 0, 0.3);
}

.seven {
  color: var(--purple);
}

.eight {
  border: solid 0.5px var(--purple);
}

.nine {
  background: var(--purple);
  color: white;
  position: relative;
  box-shadow: 0px 0px 35px rgba(0, 0, 0, 0.8);
}

.ten:after {
  position: absolute;
  content: '';
  width: 100%;
  height: 100%;
  padding: 15px;
  top: -16px;
  left: -16px;
  border-radius: 100px;
  border: solid 1px var(--clear);
}

.eleven:after {
  position: absolute;
  content: '';
  padding: 30px;
  top: -31px;
  left: -31px;
  background: white;
  z-index: -1;
}

.twelve {
  color: var(--background);
}

.thirteen {
  text-decoration: underline;
}

.fourteen {
  animation: animation 1.5s linear infinite;
  background: linear-gradient(
    to right,
    var(--purple) 0%,
    white 48%,
    white 52%,
    var(--purple) 100%
  );
  background-size: 500px 640px;
  position: relative;
}

@keyframes animation {
  0% {
    background-position: 0 0;
  }
  100% {
    background-position: 500px 0;
  }
}

.fifteen {
  height: 100vh;
  width: 100vw;
  border-radius: 0;
  display: flex;
  justify-content: center;
  align-items: center;
}