body {
  font-family: Arial, sans-serif;
  margin: 20px;
  line-height: 1.6;
}

header {
  text-align: center;
  margin-bottom: 20px;
}

h2, h3, h4 {
  text-align: center;
  color: #333;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 10px 0;
}

table, th, td {
  border: 1px solid #ccc;
}

th, td {
  padding: 8px;
  text-align: center;
}

.hidden {
  display: none;
}

.actions {
  text-align: center;
  margin: 20px 0;
}

button {
  padding: 10px 20px;
  margin: 5px;
  border: none;
  background: #007BFF;
  color: white;
  cursor: pointer;
  border-radius: 5px;
}

button:hover {
  background: #0056b3;
}


footer {
  text-align: center;
  margin-top: 30px;
  padding: 15px;
  background: #2c3e50;
  color: white;
}
footer a {
  color: #f1c40f;
  text-decoration: none;
}