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

.menu {
    display: flex;
    flex-wrap: wrap;
    background-color: #222;
}

.menu a {
    flex: 1;
    padding: 12px;
    color: white;
    text-align: center;
    text-decoration: none;
}

.menu a:hover {
    background-color: #555;
}

main {
    padding: 20px;
}

h1 {
    text-align: center;
}

.lista {
    padding-left: 20px;
}

.lista li {
    margin: 6px 0;
    color: #333;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

th, td {
    border: 1px solid #999;
    padding: 10px;
    text-align: center;
}

img {
    width: 80px;
}

.formulario {
    display: flex;
    flex-direction: column;
    max-width: 400px;
}

.formulario input,
.formulario select,
.formulario textarea {
    margin-bottom: 10px;
    padding: 6px;
}

button {
    padding: 8px;
    background-color: #333;
    color: white;
    border: none;
}

@media (max-width: 600px) {
    .menu a {
        flex: 100%;
        font-size: 18px;
    }
}

@media (min-width: 601px) {
    .menu a {
        font-size: 14px;
    }
}