#nav_vert {
height: 50em;
}

body {
    font-family:Helvetica, Arial, sans-serif;
	margin:0;
	padding:0;
	font-size:100%;
}


table img {
    width: 90%;
    height: auto;
}

table td {
    text-align: center;
}

@media only screen and (max-width: 900px) {
    th, td {
        display: block;
    }
    thead {
        display: none;
    }
    td img {
        float: none;
    }
    p {
        text-align: left;
        margin-left: -3%;
    }
}