placebo.css

/* https://s9a.page/tape */
:root{--tape-filter:none;--tape-bluv:#11dff1;--tape-play:#fbbfff;--tape-loud:#eee833;--tape-luvu:#44f477;--tape-blaq:#0e0e0e;--tape-watt:#e0e0e0;--tape-hex:#e0e0e0;--tape-mix:transparent}.tape-watt{--tape-hex:var(--tape-watt)}.tape-luvu{--tape-hex:var(--tape-luvu)}.tape-loud{--tape-hex:var(--tape-loud)}.tape-play{--tape-hex:var(--tape-play)}.tape-bluv{--tape-hex:var(--tape-bluv)}.tape-flat{border-color:transparent}.tape-flap{border-color:currentColor}.tape-flow{--tape-remix:none}.tape-flow :not(.tape-skip){background-color:transparent;color:inherit}.tape-blaq,.tape-bluv,.tape-loud,.tape-luvu,.tape-play,.tape-watt{--tape-mix:var(--tape-hex);--tape-remix:none;color:var(--tape-blaq)!important;background-color:var(--tape-mix)!important;background-image:var(--tape-remix);filter:var(--tape-filter)}.tape-blaq{--tape-mix:var(--tape-blaq);color:var(--tape-hex)!important}.tape-erase,.tape-erase *{color:transparent!important}

/* play. */

.pastel {
  --tape-bluv: plum;
  --tape-luvu: turquoise;
  --tape-play: violet;
}

.pepper {
  --tape-play: deeppink;
  --tape-bluv: violet;
}

.placid {
  --tape-play: mediumpurple;
}

.saliva {
  box-shadow: -30vh 0 3rem 0 deeppink;
}

.mymood {
  text-shadow:
    0 -1vh 0 blueviolet,
    0 1vh 0 darkviolet,
    0 1vh 0 deeppink;
}

.vacuum {
  box-shadow: -3em 0 5rem 0 turquoise;
}

.vallee {
  writing-mode: vertical-rl;
}

.deo { font-size: 1.236em }
.dua { font-size: 1.618em }

:root {
  --tape-remix: conic-gradient(
    var(--tape-play),
    var(--tape-watt),
    var(--tape-watt),
    var(--tape-play)
  );
}

::selection {
  color: magenta;
  background: navy;
}

:focus {
  outline: thick outset;
  box-shadow: 0 0 1ex 1ex blueviolet;
}

:hover {
  text-decoration-style: double;
}

html {
  font-family: sans-serif;
  font-size: max(5ex, 3vmax + 3vmin);
  line-height: 1.618;
}

body {
  margin: 3vh auto;
  overflow-wrap: anywhere;
}

p {
  display: table;
  margin: 3vh 0;
}

article {
  align-items: flex-end;
  display: flex;
  flex-flow: column wrap;
  padding: 1rem 20vw;
  text-align: end;
}

a {
  display: inline-flex;
  border-radius: 1em;
  padding: calc(1ex / 3);
}

samp,
mark {
  border-radius: 1em;
  padding: calc(2ex / 3);
  font-family: sans-serif;
}

h1 {
  font-size: max(3ch, 3vmax);
  margin: 0;
}