www.css

.uninado {
  --u: 1rem;
  --x: 1;
  --e: 1;
  font-family: monospace;
  font-size: calc(2ex + 2vmin);
  line-height: 1;
}

.uninado * {
  font-size: calc(var(--u) * var(--x) * var(--e));
}

.em { --u: 1em }
.ex { --u: 1ex }
.ch { --u: 1ch }
.vh { --u: 1vh }
.vw { --u: 1vw }
.vmax { --u: 1vmax }
.vmin { --u: 1vmin }

.x1 { --x: 1 }
.x2 { --x: 2 }
.x3 { --x: 3 }
.x4 { --x: 4 }
.x5 { --x: 5 }
.x6 { --x: 6 }
.x7 { --x: 7 }
.x8 { --x: 8 }
.x9 { --x: 9 }
.x0 { --x: 0 }

body {
  align-items: center;
  display: flex;
  flex-flow: column;
  overflow-wrap: break-word;
  margin: 0;
}

figure {
  contain: content;
  margin: 0;
  display: flex;
  flex-flow: row;
  flex-grow: 1;
  align-self: stretch;
  padding-block-end: 1rem;
}

code {
  text-shadow: 0 3rem 3vh var(--tape-yellow);
}

@media (orientation: portrait) {
  figure {
    writing-mode: vertical-rl;
  }
}

nav {
  font-weight: bold;
}

a {
  font-weight: bolder;
  outline-color: purple;
  text-decoration-style: dotted;
}

.pad {
  box-sizing: border-box;
  padding: 1rem;
}

.core {
  display: flex;
  flex-flow: column;
  flex-grow: 1;
  align-items: center;
  align-content: stretch;
  justify-content: center;
}

.tropic {
  display: flex;
  flex-flow: row;
  flex-basis: calc(100vh/3);
  width: 100%;
}

@media (orientation: landscape) {
  .tropic {
    flex-flow: column;
  }
}

.halfpipe {
  transform: rotate(180deg);
}

.oral {
  overflow: hidden;
  contain: paint;
  line-height: 0;
  font-size: 0;
  margin: 0;
  height: 0;
  width: 0;
}

.spray:focus-within {
  z-index: 1;
  box-shadow:
    0 3rem 33vh var(--tape-hex),
    0 -3rem 33vh var(--tape-hex);
}

.hole:active {
  border-style: dotted;
  border-width: thick;
}

@media (orientation: landscape) {
  .hole {
    writing-mode: vertical-lr;
  }
}