My CSS, footer and header don’t show up!

This is how your index.php and other public facing pages should be.. Don’t forget to add get_header() and get_footer()

<?php get_header(); ?>

    <!-- Row for main content area -->
    <div id="content">

        <div>
            <!--  Main Content Loop HERE, or just use while have posts and get the content;..-->
            <?php get_template_part('loop', 'index'); ?>
        </div>

    </div><!-- End Content row -->

    <?php get_sidebar(); ?>

Learn more here : http://codex.wordpress.org/Function_Reference/get_header
http://codex.wordpress.org/Function_Reference/get_footer