Social media toolbar position

Hi,
I’ve modified the social toolbar to be displayed vertically, but can not get it to float at a fixed position ABOVE everything else in the page. tried high z-index with no luck. I guess the issue is where the action and filter are added to the content in functions.php:

add_action('ava_after_content', 'avia_add_social_toolbar', 10, 2);
function avia_add_social_toolbar($id = "", $context = "")
{
	if($context == "single-portfolio")
		avia_social_share_links();
}

add_filter('avf_template_builder_content', 'avia_add_social_toolbar_template_builder', 10, 1);
function avia_add_social_toolbar_template_builder($content = "")
{
	//if(is_singular('portfolio')) {
	$content .= avia_social_share_links(array(), false);
	$content .= '<div style="height:1px; margin-top:50px;" class="hr"></div>';
	//}
	return $content;
}

Would appreciate any help.

Thanks