* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: sans-serif;
    background-color: black;
}

header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 5rem;
    background-color: #000000;
}

.logo {
    max-width: 11rem;
}

.nav-list {
    list-style-type: none;
    display: flex;
    gap: 1rem;
}

.nav-list li a {
    text-decoration: none;
    color: #ffbf00;
}

.abrir-menu,
.cerrar-menu {
    display: none;
}

@media screen and (max-width: 550px) {
    .abrir-menu,
    .cerrar-menu
     {
        display: block;
        border: 0;
        font-size: 2rem;
        background-color: transparent;
        cursor: pointer;
    }

    .abrir-menu {
        color: #ffbf00;
    }

    .cerrar-menu {
        color: #ffbf00;
    }

    .nav {
        opacity: 0;
        visibility: hidden;

        display: flex;
        flex-direction: column;
        align-items: end;
        gap: 2rem;
        position: absolute;
        top: 0;
        right: 0;
        bottom: 0;
        background-color: #000000;
        padding: 4rem;
        box-shadow: 0 0 0 100vmax rgba(0, 0, 0, .5);
    }

    .nav.visible {
        opacity: 1;
        visibility: visible;
    }

    .nav-list {
        flex-direction: column;
        align-items: end;
    }
}

.Quienes-somos {
    color: #ffbf00;
    text-align: center;
    background-color: #000000;
}

.Fundador-CEO {
    color: #ffbf00;
    text-align: center;
    background-color: #000000;
    padding: 5rem;
}

.text-center {
    padding: 4rem;
    margin-top: -6rem;
}