body {
  font-family: Arial, sans-serif;
  margin: 20px;
  background: #f8f9fa;
}

h1, h2 {
  color: #333;
}

form {
  margin-bottom: 20px;
}

input {
  padding: 8px;
  margin-right: 5px;
  border: 1px solid #ccc;
  border-radius: 5px;
}

button {
  padding: 8px 12px;
  border: none;
  border-radius: 5px;
  background: #007bff;
  color: white;
  cursor: pointer;
}

button:hover {
  background: #0056b3;
}

#checkout-list, #product-list {
  list-style-type: none;
  padding: 0;
}

#checkout-list li, #product-list li {
  margin: 8px 0;
  padding: 6px;
  background: #fff;
  border-radius: 5px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

#checkout-list button, #product-list button {
  background: #dc3545;
  padding: 5px 10px;
  border-radius: 5px;
}

#checkout-list button:hover, #product-list button:hover {
  background: #a71d2a;
}