.titles {
    margin: 0;
    padding: 0;
    overflow: hidden;
}
.titles h2 {
    display: block;
}
.nav {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
}
.left {
    margin-right: 1em;
    float: left;
    text-align: left;
}
.right {
    margin-left: 1em;
    float: right;
    text-align: right;
}
.nav a {
    display: block;
    text-decoration: none;
}