* {
  margin: 0px;
  padding: 0px;
}

a {
  text-decoration: none;
}

body {
  height: 100vh;
  box-sizing: border-box;
}

#color {
    position: fixed;
    bottom: 0px;
    left: 0px;
    pointer-events: none;
}

.underline {
  text-decoration: none;
  white-space: nowrap;
  color: #121314;
  position: relative;
}

.underline:after {
  content: '';
  position: absolute;
  z-index: -1;
  top: 66%;
  left: -0.1em;
  right: -0.1em;
  bottom: 0;
  transition: top 200ms cubic-bezier(0, 0.8, 0.13, 1);
  background-color: rgba(79, 192, 141, 0.5);
}