styles.css

* {
  box-sizing: border-box;
  touch-action: manipulation;
  user-select: none;
}

html, body, main {
  height: 100%;
}

body {
  background: #000 url('assets/logo_white.png') 50% 50% no-repeat;
  background-size: 158px 19px;
  color: #fff;
  font-family: sans-serif;
  margin: 0;
  overflow: hidden;
}

main {
  display: flex;
  place-items: center;
}

canvas {
  aspect-ratio: 320 / 480;
  display: block;
  height: revert !important;
  margin: 0 auto;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  width: revert !important;
}

.alert {
  bottom: 0;
  left: 0;
  position: fixed;
  right: 0;
  top: 0;
  z-index: 10;
}

#settings {
  background: #fff;
  display: flex;
  flex-direction: column;
  gap: 20px;
  justify-content: center;
  padding: 0 15vw;
}

#settings button {
  background: #000;
  border: 0;
  color: #fff;
  font-size: 20px;
  padding: 20px 0;
  position: relative;
}

[data-sound]:before {
  background: red;
  content: '';
  display: block;
  height: 20px;
  left: 20px;
  margin-top: -10px;
  position: absolute;
  top: 50%;
  width: 20px;
}

.active:before {
  background: green;
}

#permission,
#mobile {
  align-items: center;
  background: #000;
  display: flex;
  font-size: 20px;
  flex-direction: column;
  gap: 20px;
  justify-content: center;
  padding: 0 15vw;
  text-align: center;
}

#permission button {
  background: #fff;
  border: 0;
  color: #000;
  font-size: 20px;
  padding: 20px 0;
  width: 100%;
}

#mobile {
  display: none;
}

@media (min-width: 768px), (orientation: landscape) {
  #mobile {
    display: grid;
    place-items: center;
  }
}

[hidden] {
  display: none !important;
}

#p5_loading {
  display: none;
}