html {
  padding: .666rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-weight: normal;
  font-size: 13px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  max-width: 720px;
  margin: 0 auto;
}

section {
  margin: 1.333rem 0;
}

#qr-code, #stats, header {
  display: grid;
  place-content: center;
}

#tools-and-params {
  margin-top: 4rem;
  display: grid;

  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

#tools {
  padding: 1rem;
}

label {
  display: block;
  margin: .666rem 0;
}

input:not([type=checkbox]), select {
  display: block
}

pre {
  background: #F2F2F2;
  padding: 1rem;
  border-radius: 8px;
  color: black;
  max-width: 100%;
  overflow: auto;
}