/* Reset básico */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    background-color: #f4f4f4;
    color: #333;
}

header {
    background-color: #333;
    color: #fff;
    padding: 1rem 0;
    text-align: center;
}

header h1 {
    margin-bottom: 0.5rem;
}

nav ul {
    list-style: none;
    padding: 0;
}

nav ul li {
    display: inline;
    margin: 0 10px;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
}

main {
    padding: 20px;
}

.gallery {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
}

.quadro {
    background-color: #fff;
    border: 1px solid #ddd;
    padding: 10px;
    text-align: center;
    width: 300px;
}

.quadro img {
    max-width: 100%;
    height: auto;
}

.quadro button {
    background-color: #333;
    color: #fff;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    margin-top: 10px;
}

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

footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 1rem 0;
    margin-top: 20px;
}

.personalize {
    text-align: center;
}

.personalize form {
    margin-top: 20px;
}

.personalize input[type="file"] {
    margin-bottom: 20px;
}

#preview {
    margin-top: 20px;
}

#preview-image {
    max-width: 100%;
    height: auto;
    border: 1px solid #ddd;
    padding: 10px;
}

#cardNumber, #expirationDate, #securityCode {
    border: 1px solid #ccc;
    padding: 10px;
    margin-bottom: 10px;
    border-radius: 4px;
}