style.css

html,
body {
  -webkit-tap-highlight-color: transparent;
  margin: 0;
  padding: 0;
  background: #252525;
  color: #fff;
  font-size: 16px;
  line-height: 1.4;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue",
    "Noto Sans", "Liberation Sans", Arial, sans-serif, "Apple Color Emoji",
    "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
}

main {
  display: flex;
  justify-content: center;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 20px;
}

#title {
  padding: 20vh 20px;
  text-align: center;
}

.shuffler.fixed { 
  position: fixed;
  bottom: 10vh;
  left: 25vw;
}

.shuffler {
  width: 50vw;
  background: red;
  border-radius: 32px;
  color: #fff;
  border: 0;
  padding: 12px 20px;
  font-weight: bold;
  font-size: 20px;
  cursor: pointer;
  box-shadow: 0 8px 0 rgb(183, 9, 0), 0 15px 20px rgba(0, 0, 0, 0.35);
  transition: all 0.2s;
}
.shuffler:active {
  box-shadow: 0 5px 0 rgb(183, 9, 0), 0 10px 20px rgba(0, 0, 0, 0.35);
  transform: translateY(5px);
}
svg {
  display: inline-block;
  height: 12px;
  width: auto;
}

a {
  color: #aaa;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

small {
  color: #757575;
  padding: 8px;
  width: calc(100% - 16px);
}