.page-list {
    text-align: center;
    list-style-type: none;
    padding: 0;
    margin: 1em auto 0 auto;
    display: inline-block;
}

.page-list li {
    display: inline-block;
}

.page-list li a {
    display: inline-block;
    padding: 0.4em 1.2em;
}