body {
    font-family: sans-serif;
    margin: 0;
    padding: 0;
    background: #ffffff;
    color: #111;
    text-align: center;
}

header {
    padding: 20px;
    background-color: #f7f7f7;
}

.logo {
    height: 60px;
    max-width: 100%;
}

main {
    padding: 20px;
}

.intro, .servicios, .portafolio {
    margin-bottom: 40px;
}

.servicios ul {
    list-style: none;
    padding: 0;
}

.servicios li {
    margin: 10px 0;
}

.portafolio .galeria {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.portafolio .placeholder {
    width: 200px;
    height: 120px;
    background-color: #eee;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
    border-radius: 4px;
}

footer {
    background: #111;
    color: white;
    padding: 20px;
}

footer a {
    color: #fff;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

@media (max-width: 600px) {
    .portafolio .placeholder {
        width: 100%;
    }
}