body {
  box-sizing: border-box;
  min-height: 100vh;
  max-width: 70ch;
  padding: 3rem 1rem;
  margin: auto;
  font-family: system-ui, sans-serif;
  line-height: 1.75;
  font-size: 1.25rem;
}

input,
button {
  width: 100%;
  font-size: 1rem;
  padding: 10px;
  box-sizing: border-box;
  margin-bottom: 20px;
}

textarea {
  width: 100%;
  font-size: 1rem;
  padding: 10px;
  box-sizing: border-box;
  resize: vertical;
  overflow-y: auto;
}

@media (prefers-color-scheme: dark) {
  body,
  textarea {
    background-color: #1e1e1e;
    color: #e6e6e6;
  }
}