category title description

i’m trying to change the rollover text/title description that shows up when you hover over a nav item on my site. currently it says “view all posts filed under” + the category (nav item) name. i can’t seem to figure out where to change that text from the default.. i was able to do it for the images, so when you hover over an image, it says “go to there:” plus the post title.

i think this is something really basic but i just can’t figure it out…

here’s a link to the site (in progress)
https://ankatankdesign.com/makes/

here’s the code that places the nav:

<div id="mainNav">
    <div class="navItems">

        <li <?php if (is_home()){
                echo 'class="current_page_item_home"';
            } else {
                echo 'class="cat-item"';
            }
            ?>>
            <a href="<?php bloginfo('url'); ?>/">Recent Stuff</a>
        </li>

        <?php wp_list_categories('title_li='); ?>

         <li <?php if (is_page('photo')){
                echo 'class="current_page_item_home"';
            } else {
                echo 'class="cat-item"';
            }
            ?>>
            <a href="https://ankatankdesign.com/makes/photo/">photography</a>
         </li>
         <li>
            <div id="tag_link"><a href="#show_tags">tags</a></div>
         </li>
    </div>
</div>

thanks in advance!