body {
  font-family: Arial, sans-serif;
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
}

header {
  font-weight: bold;
  margin-bottom: 20px;
}

table {
  border-collapse: collapse;
  margin: 10px 0;
}

th, td {
  border: 1px solid #ccc;
  padding: 6px 10px;
  text-align: left;
}

.hero {
  text-align: center;
  padding: 40px 0;
}

.muted {
  color: #666;
}

.error {
  color: red;
}

input {
  padding: 8px;
  width: 250px;
}

button {
  padding: 8px 12px;
}