body {
    margin: 0;
    padding: 0;
    background: url("img/fondo.png") no-repeat center center fixed;
    background-size: cover;
    color: white;
    font-family: Arial, Helvetica, sans-serif;
    text-align: center;
}

.header {
    padding: 20px 0;
}

.header-img {
    max-width: 90%;
    height: auto;
}


.logos-section1,
.logos-section2,
.logos-section3 {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 25px;
    padding: 10px 0;
}

.logo-item img {
    max-width: 280px;
    width: 100%;
    height: auto;
}

.websites {
    display: flex;
    justify-content: center;
    gap: 30px;
    padding: 20px 0;
}

.website-item img {
    max-width: 240px;
    width: 100%;
    height: auto;
}

.footer {
    padding: 25px;
    font-size: 1.3em;
    font-weight: bold;
}

@media (max-width: 768px) {
    .logo-item img {
        max-width: 160px;
    }

    .websites {
        flex-direction: column;
        gap: 15px;
    }

    .website-item img {
        max-width: 180px;
    }
}