body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: #14161a;
  color: #f2f2f2;
  font-family: system-ui, sans-serif;
}

main {
  width: min(320px, 100% - 32px);
}

form {
  display: grid;
  gap: 8px;
}

input,
button {
  font: inherit;
  padding: 10px;
  border-radius: 6px;
  border: 1px solid #555;
}

button {
  background: #1d6fd6;
  color: #fff;
  border-color: #1d6fd6;
  cursor: pointer;
}

#error {
  min-height: 1.2em;
  margin: 0;
  color: #ff9b8a;
}