main {
  font-family: Arial, sans-serif;
  
  display: flex;               /* Enable flexbox */
  justify-content: center;      /* Horizontally center */
  align-items: center;          /* Vertically center */                /* Set height to viewport height */
  text-align: center;           /* Center text */
}

.order-summary {

    width: 30%;                 /* Adjust width as needed */
    background-color: #f4f4f4;
    padding: 20px;
    border: 3px solid black;
    border-radius: 5px;
    text-align: center;          /* Center all text */
}

.order-summary h3 {
    margin-bottom: 20px;
}

.order-summary table {
    width: 100%;                /* Make the table width match the container */
    margin-bottom: 20px;
    text-align: center;
}

.order-summary table th,
.order-summary table td {
    text-align: center;
    padding: 10px 0;
}

.order-summary table th {
    border-bottom: 1px solid #ddd;
    text-align: center;
}

.order-summary button {
    background-color: gray;
    color: #fff;
    padding: 10px 15px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    width: 100%;
    text-size-adjust: 10px;
}

.order-summary button:hover {
    background-color: #555;
}

#checkout-btn {
    width: 100%;
}