:root {
  color-scheme: light;
  font-family: system-ui, sans-serif;
  background: #f4f6f8;
  color: #1f2933;
}
body {
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
}
main {
  width: min(88vw, 360px);
}
form {
  display: grid;
  gap: 18px;
  padding: 28px;
  border: 1px solid #d8dee4;
  border-radius: 12px;
  background: white;
  box-shadow: 0 8px 28px rgb(31 41 51 / 10%);
}
h1 {
  margin: 0;
  font-size: 24px;
}
label {
  display: grid;
  gap: 6px;
  font-weight: 600;
}
input,
button {
  min-height: 44px;
  box-sizing: border-box;
  border-radius: 7px;
  font: inherit;
}
input {
  border: 1px solid #aab4be;
  padding: 8px 10px;
}
button {
  border: 0;
  background: #334e68;
  color: white;
  font-weight: 700;
  cursor: pointer;
}
#message {
  min-height: 1.5em;
  margin: 0;
  color: #a61b1b;
}