body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  background-color: #f7f7f7;
  color: #444;
}

.layout {
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 32px;
  height: 100dvh;
}

/* https://dev.to/afif/i-made-100-css-loaders-for-your-next-project-4eje */
.loader {
  width: 45px;
  aspect-ratio: 0.75;
  --c: no-repeat linear-gradient(#333 0 0);
  background: var(--c) 0% 50%, var(--c) 50% 50%, var(--c) 100% 50%;
  background-size: 20% 50%;
  animation: loading 1s infinite linear;
}

@keyframes loading {
  20% {
    background-position: 0% 0%, 50% 50%, 100% 50%;
  }
  40% {
    background-position: 0% 100%, 50% 0%, 100% 50%;
  }
  60% {
    background-position: 0% 50%, 50% 100%, 100% 0%;
  }
  80% {
    background-position: 0% 50%, 50% 50%, 100% 100%;
  }
}