body {
    font-family: Georgia, sans-serif;
}

#header h1 {
    text-align: center;
}

#header ul li {
    display: inline;
}

#content {
    margin: 0 5%;
}

#talks {
    padding: 0;
}
#talks li a img {
    float: left;
    margin: 0 10px;
}
#talks li {
    clear: both;
    list-style-type: none;
}