I am new to magento, and i am applying css to left navigation menu in left.phtml of magento project,here is the code
<div id="leftnav">
<?php
$_menu = $this->renderCategoriesMenuHtml(0, 'level-top');
?>
<?php if($_menu): ?>
<div class="category">
<div class="title" style="color:#fff;border:1px solid gray;padding:10px;"><?php echo $this->__('Category menu:') ?></div>
<ul class="submenu">
<?php echo "sidebar.phtml" ?>
</ul>
</div>
<?php endif ?>
</div>
but the css is not applying,so tell me how to do css modifications