index.css

body {
    background-image: url("images/container-background.jpg");
    max-width: 1024px;
    margin: 0 auto;
}
table {
    font-size: 20px;
    font-family: sans-serif;
    background: white;
    width: 100%;
    height: 100%;
    padding: 20px;
}
.header {
    font-size: 300%;
    font-weight: bold;
}
.title {
    font-size: 150%;
    font-weight: bold;
}
.details {
    font-size: 80%;
    font-style: italic;
}
td {
    padding: 1px;
    height: 1em;
}
td.spacer {
    height: unset;
}
td.footer {
    padding-top: 80px;
    height: 100px;
}
td.title {
    border-bottom: thick solid black;
    padding-bottom: 2px;
    padding-top: 20px;
}
a {
    text-decoration: none;
}
a:hover {
    background: yellow;
}
a.attend:after {
    content: "📅 attend";
}
a.slides:after {
    content: "📚 slides";
}
a.chat:after {
    content: "💬 chat";
}
a.video:after {
    content: "📺 video";
}