body {
    background-color: white;
    margin: 2em;
    font-family: "Open Sans", Arial, Helvetica, sans-serif;
    font-weight: 400;
    letter-spacing: 0px;
    font-style: normal;
}


a:active, a:link {text-decoration: none; colour: black}
a:visited {text-decoration: none; colour: darkgrey}
a:hover {text-decoration: underline}

footer {
    text-align: center;
    background-color: #c0c0c3;
    padding: 10px;
    font-size: 70%;
}

.navigation ul {
    text-align: right;
    margin-bottom: -1em;
    font-style: italic;
    font-size: 70%;
}

.navigation ul li {
    display: inline;
    list-style-type: none;
    margin-left: 5px;
    margin-right: 5px;
    align-content: center;
}

div.horiz {
    text-align: center;
}

div.horiz div {
    display: inline-block;
    width:10em;
    text-align:center;
}

div.horiz div img {
    width: 8em;
    filter: drop-shadow(0.2em 0.2em 0.1em #cccccc);
}

div.horiz div a:hover img {
    filter: drop-shadow(0.2em 0.2em 0.1em #aaaaaa);
}