Base
<nav class="pagination">
    <ul>
        <li class="prev"><a href="">←</a></li>
        <li>
            <ul>
                <li><span>...</span></li>
                <li><a href="">...</a></li>
            </ul>
        </li>
        <li class="next"><a href="">→</a></li>
    </ul>
</nav>
Centered
<nav class="pagination align-center">
    <ul>
        <li class="prev"><a href="">←</a></li>
        <li>
            <ul>
                <li class="active"><a href="#">...</a></li>
                <li><a href="">...</a></li>
            </ul>
        </li>
        <li class="next"><a href="">→</a></li>
    </ul>
</nav>
Wide
Here you can see an example where previous and next buttons are aligned to the left and to the right, with a link in the center of the page.
<nav class="pagination align-center upper strong">
    <ul>
        <li class="prev"><a href="">< Prev</a></li>
        <li class="w100">
            <ul>
                <li><a href="">...</a></li>
            </ul>
        </li>
        <li class="next"><a href="">Next ></a></li>
    </ul>
</nav>
Pager
<nav class="pagination pager">
    <ul>
        <li class="prev"><a href="">Previous</a></li>
        <li class="next"><a href="">Next</a></li>
    </ul>
</nav>
<nav class="pagination pager align-center">
    <ul>
        <li class="prev"><a href="">Previous</a></li>
        <li class="next"><a href="">Next</a></li>
    </ul>
</nav>
Elements within a single list item can be stacked to create a clean and intuitive pagination elements.
<nav class="pagination pager flat">
    <ul>
        <li class="prev">
            <span class="label tag">Prev</span>
            <a href="">...</a>
        </li>
        <li class="next">
            <span class="label tag">Next</span>
            <a href="">...</a>
        </li>
    </ul>
</nav>