body {
  font: 16px system-ui;
  background: #f8f8f6;
  color: #111;
  margin: 0;
}
main {
  max-width: 760px;
  margin: auto;
  padding: 24px;
}
label {
  display: block;
  margin: 12px 0;
}
input,
select,
button {
  font: inherit;
  padding: 12px;
  box-sizing: border-box;
  max-width: 100%;
}
input,
select {
  display: block;
  width: 100%;
}
button {
  margin: 6px 0;
  cursor: pointer;
}
pre {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
section[hidden] {
  display: none;
}