.checkout_container {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    font-family: Arial, sans-serif;
    margin: 3rem 0;
}
.checkout-form {
    flex: 1;
    width: 100%;
    max-width: 650px;
    padding: 20px;
    background-color: #ffffff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    margin-right: 20px;
}
.checkout-form > h1 {
    font-size: 1.8rem;
}
#checkout-form {
    margin: 0;
}
.form-group {
    margin-bottom: 20px;
}
.checkout_container > label {
    font-weight: bold;
}
.checkout_container > input[type="text"],
.checkout_container > input[type="email"],
.checkout_container > input[type="number"],
.checkout_container > textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    margin: 0;
}
#checkout-form > button {
    background-color: var(--accent-color);
    color: #ffffff;
    border: none;
    border-radius: 4px;
    padding: 10px 20px;
    cursor: pointer;
    margin: 0;
}
#checkout-form > button:hover {
    opacity: 0.7;
}
.side-panel {
    flex: 1;
    width: 100%;
    max-width: 450px;
    padding: 20px;
    background-color: #f5f5f5;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}
.product-image {
    max-width: 100%;
    height: auto;
}
.price {
    font-size: 18px;
    font-weight: bold;
    margin-top: 10px;
}
.date-range {
    font-size: 14px;
    color: #777;
}
@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }
    .checkout-form,
    .side-panel {
        margin-right: 0;
        margin-bottom: 20px;
    }
}