body {
  font-family: Arial, sans-serif;
  margin: 16px;
}

header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

main {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 20px;
}

button,
input,
select,
textarea {
  font: inherit;
  margin: 3px;
  padding: 5px;
}

button {
  cursor: pointer;
}

nav button {
  display: block;
  width: 100%;
  text-align: left;
}

label {
  display: block;
  margin: 8px 0;
}

label span {
  display: block;
  margin-bottom: 2px;
}

input,
select,
textarea {
  width: min(520px, 100%);
  box-sizing: border-box;
}

textarea {
  min-height: 72px;
}

table {
  border-collapse: collapse;
  width: 100%;
  margin-top: 12px;
}

th,
td {
  border: 1px solid #999;
  padding: 5px;
  vertical-align: top;
  text-align: left;
}

pre {
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
}

#message {
  margin: 8px 0;
}

@media (max-width: 800px) {
  main {
    grid-template-columns: 1fr;
  }
}