#presentation {
    background: white;
}

#presentation .container {
    margin: 0 auto;
}

#presentation #content {
    padding-top: 50px;
}

.row.presentation-item {
    font-size: 1.2vw;
    color: ##666;
    padding-bottom: 20vh;
    line-height: 1.4em;

}

.presentation-item h3 {
    font-size: 4vmin;
    font-family: Marine-Rounded-Light, sans-serif;
    /*text-transform: uppercase;*/
    color: #333;
    margin-bottom: .5em;
}

.presentation-item .col {
    display: flex;
    flex-direction: column;
    align-content: center;
    justify-content: center;
}

.presentation-item .col.txt {
    text-align: center;
}

.presentation .col p {
    line-height: 1em;
    margin-bottom: 0;
}

#presentation .page nav a {
    border: 1px solid #666;
    border-radius: 0;
    transition: .5s background-color ease;
}

#presentation .page  nav a:hover {
    background: silver;
}

#presentation nav {
    margin-bottom: 8vh;
    border-collapse: collapse;
}

#presentation nav a:first-child {
    border-bottom-left-radius: 4px;
    border-top-left-radius: 4px;
    border-right: 0;
}

#presentation nav a:last-child {
    border-bottom-right-radius: 4px;
    border-top-right-radius: 4px;
    border-left: 0;
}

#presentation .nav-pills .nav-link.active {
    background: black;
}

@media screen and (max-width: 414px){

    .nav-link {
        width: 100%;
    }

    .presentation-item h3 {
        font-size: 8vw
    }

    .row.presentation-item {
        font-size: 4vw;
    }

    .presentation-item .col {
        padding: 0 2em;
    }

}