.buttons {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: horizontal;
    -webkit-box-direction: normal;
        -ms-flex-direction: row;
            flex-direction: row;
    -webkit-box-pack: space-evenly;
        -ms-flex-pack: space-evenly;
            justify-content: space-evenly;
    margin-bottom: 2em;
}

.menu-png {
    display: inline-block;
    text-align: center;
    margin: 0 auto;
    width: 45%;
    min-width: 320px;
}

.center-image {
    display: block;
    margin: auto;
}

.menu-button {
    padding: 0.5em 0.5em;
    border: 2px solid white;  

    color:white;
    font-family: 'Nunito', sans-serif;
    font-size: 1.563rem;
    background-color: rgba(26, 26, 26, 0.6);
    -webkit-transition: background 0.2s ease;
    -o-transition: background 0.2s ease;
    transition: background 0.2s ease;
}

.menu-button:hover {
    background-color: rgba(134, 134, 134, 0.8);
}

.menu-button:active {
    background-color: rgba(41, 41, 41, 0.8);
}

.button-link {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
    -webkit-box-pack: center;
        -ms-flex-pack: center;
            justify-content: center;
}

.back-button {    
    margin-top: 1em;
    width: 300px;
}

.wrapper {
    text-align: center;
    overflow: hidden;
    height: 100%; 
}

@media only screen and (max-width: 1600px){
    .menu-png {
        display: block;
        width: 100%;
        margin: auto;
    }
}

@media only screen and (max-width: 768px) {
    .buttons {
        -webkit-box-orient: vertical;
        -webkit-box-direction: normal;
            -ms-flex-flow: column wrap;
                flex-flow: column wrap;
        width: 100%;
        border-bottom: none;
    }

    .buttons:last-child {
        border-bottom: 2px solid white; ;
    }

    .menu-button {
        border-right: none;
        border-left: none;
    }

    .back-button {
        border: 2px solid white;  
    }
}