body {
  margin: 0;
  font: 16px/1.5 system-ui, sans-serif;
  color: #1d1f23;
  background: #f7f7f4;
}

main {
  max-width: 680px;
  margin: 0 auto;
  padding: 48px 20px;
}

h1 {
  font-size: 48px;
  line-height: 1;
  letter-spacing: 0;
}

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

input {
  flex: 1;
  min-width: 0;
  padding: 12px 14px;
  border: 1px solid #b8babf;
  border-radius: 8px;
}

button {
  border: 0;
  border-radius: 8px;
  padding: 12px 16px;
  color: white;
  background: #111;
}

li {
  margin: 10px 0;
}