body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f4f4f4;
}

.pos {
  display: flex;
  height: 100vh;
}

.products {
  width: 70%;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 15px;
  padding: 20px;
}

.product {
  background: #2ecc71;
  color: white;
  font-size: 20px;
  padding: 30px;
  text-align: center;
  border-radius: 10px;
  cursor: pointer;
}

.ticket {
  width: 30%;
  background: white;
  padding: 20px;
}

button {
  width: 100%;
  padding: 15px;
  font-size: 20px;
  background: #3498db;
  color: white;
  border: none;
  border-radius: 5px;
}