// Add custom css: quick buttons and accordion at the top of the GravityWP - CSS Selector modal
function my_custom_gwp_css_selector_add_css() {
$html .= "<div class='gwp_quick_links'>
<a class='gwp_css_link' href='#' rel='css_class' title='Insert css_class'>Custom CSS</a>
<a class='gwp_css_link' href='#' rel='css_class_2' title='Insert css_class_2'>2nd Custom CSS</a></div>
<li>
<a class='gwp_css_acc_link' href='#'>Custom CSS</a>
<div class='gwp_css_accordian'>
<a class='gwp_css_link' href='#' rel='css_class_3' title='Insert css_class_3'>3rd Custom CSS</a>
<a class='gwp_css_link' href='#' rel='css_class_4' title='Insert css_class_4'>4th Custom CSS</a>
</div>
</li>";
return $html;
}
add_filter( 'gwp_css_selector_add_custom_css', 'my_custom_gwp_css_selector_add_css' );