*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  height: 100%;
}

body {
  font-family:
    system-ui,
    -apple-system,
    sans-serif;
  line-height: 1.5;
}

ul {
  list-style: none;
}

button {
  font: inherit;
  cursor: pointer;
}

/* Any `display` rule beats the `hidden` attribute, so a hidden .btn (which sets
   display:inline-flex) would otherwise still show. Everything in the app hides
   things by toggling `hidden`, so this has to win. */
[hidden] {
  display: none !important;
}