.main-nav {
    display: flex;
    list-style: none; 
    justify-content: center; 
    flex-wrap: wrap;
}

.main-nav-element a {
    margin: 5px 10px;
    display: block;
    text-align: center;
    color: #66ffff;
    text-decoration: none;
    font-family: arial,helvetica,sans-serif;
    font-size: 0.8em;
}

.main-nav-element a:hover {
    color: #ffff44;
    text-decoration: none;
}

@media (orientation: portrait) {
    .main-nav {
        flex-direction: column;
        font-size: 3rem;
        text-align: center;
    }
    .main-nav-element {
        padding: 5px;
        margin: 20px 5px;
    }
    .overlay-img {
        width: 75%;
    }
}

html {
    height: 100%;
    width: 100%;
}

body {
    background-color: #a61500;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    padding: 0;
    margin: 0;
    justify-content: space-between;
}

.logo {
    width: 100%;
    position: relative;
}

.logo-img {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translate(-50%, 0);
}

.overlay-img {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translate(-50%, 0);
}