style.css

:root {
  --line-color: rgb(189, 172, 154);
  --bg-color: rgb(75, 72, 69);
  --panel-color: rgba(188, 169, 151, 0.18);
  --theme-color: rgb(158, 141, 125);
  --text-color-inverted: rgb(48, 35, 28);
  --highlight-color: rgb(185, 166, 148);
}

body {
  background-color: var(--bg-color);
  color: var(--theme-color);
  padding: 0;
  margin: 0;
}

main {
  margin: auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100%;
}

section {
  margin-bottom: 1.2rem;
}

a {
  color: var(--theme-color);
}

a:visited {
  color: inherit;
}

a:hover {
  color: var(--highlight-color)
}

#platforms {
  background-color: var(--panel-color);
  padding: 0.3rem;
  border: 2px solid var(--line-color);
  flex: 0 1 auto;
}

.plat {
  background-color: var(--theme-color);
  font-size: 1.5rem;
  cursor: pointer;
  margin-top: 0.1em;
  text-transform: uppercase;
  line-height: 1;
}

.plat:first-of-type {
  margin-top: 0;
}

.plat:hover {
  background-color: var(--highlight-color)
}

.faded {
  opacity: 0.2
}

.hidden {
  display: none;
}

#platforms a {
  color: var(--text-color-inverted);
  text-decoration: none;
  display: block;
  padding: 0.3rem 2rem 0.3rem 0.75rem;
  transition: transform 0.5s;
}

#platforms a:first-letter {
  font-size: 1.6em;
}

#platforms a:hover {
  transform: perspective(1px) translateX(1rem);
}

hr {
  border: none;
  border-top: 1px solid var(--line-color);
}