.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

.header {
  background-color: #333;
  color: #fff;
  padding: 20px;
  text-align: center;
}

.navbar {
  display: flex;
  justify-content: center;
  background-color: #444;
}

.navbar a {
  color: #fff;
  padding: 14px 20px;
  text-decoration: none;
  text-align: center;
}

.navbar a:hover {
  background-color: #555;
}

.footer {
  background-color: #333;
  color: #fff;
  text-align: center;
  padding: 10px;
  position: relative;
  bottom: 0;
  width: 100%;
}

.card {
  border: 1px solid #ccc;
  border-radius: 5px;
  padding: 20px;
  margin: 20px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.button {
  background-color: #28a745;
  color: white;
  padding: 10px 20px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

.button:hover {
  background-color: #218838;
}