body {

    font-family: Arial;

    background: #f5f5f5;

    padding: 20px;
}

header {

    text-align: center;

    margin-bottom: 30px;
}

.card {

    background: white;

    padding: 20px;

    border-radius: 10px;

    margin-bottom: 20px;
}

input,
textarea,
button {

    width: 100%;

    padding: 12px;

    margin-top: 10px;
}

button {

    background: #4CAF50;

    border: none;

    color: white;

    cursor: pointer;
}

.contenedor {

    display: grid;

    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));

    gap: 20px;
}

.mascota {

    background: white;

    padding: 15px;

    border-radius: 10px;
}

.mascota img {

    width: 100%;

    height: 200px;

    object-fit: cover;
}

.modal {

    display: none;

    position: fixed;

    top: 0;
    left: 0;

    width: 100%;
    height: 100%;

    background: rgba(0,0,0,0.5);
}

.modal-content {

    background: white;

    width: 400px;

    margin: 50px auto;

    padding: 20px;

    border-radius: 10px;
}