Add the Following Code to your Functions.php theme file ( under Appearance )
/*
* Split Description\TagLine
*/
function get_split_description() {
$title = get_bloginfo( 'description', 'display' );;
$lines = explode(' – ', $title);
$output = false;
$count = 0;
foreach( $lines as $line ) {
$count++;
$output .= '<span class="line-'.$count.'">'.$line.'</span><br> ';
}
return $output;
}
Change in your header.php file to use the following :
<p class="site-description"><?php echo get_split_description(); ?></p>
<?php endif; ?
Then change your Tagline to line 1 – line 2 ( with a slash and space in between )