body {
    color: black;
    background-color: #d4d4d4;
    margin-top: 4ex;
    margin-left: 4ex;
    margin-right: 4ex;
}
H1 {
    font-size: 200%;
    text-align: center;
    font-family: sans-serif;
    font-weight: bold;
}
H2 {
    font-size: 120%;
    text-align: left;
    margin-top: 4ex;
    font-family: sans-serif;
    font-weight: bold;
}
.thumb {
    margin: 2ex 2ex 0ex 0ex;
}
A:link {
    text-decoration: none;
    color: #4b6b95;
}
A:visited {
    text-decoration: none;
    color: #77acef;
}
.small {
    font-size: 80%;
}
.center {
    text-align: center;
}