Tablet Menu Not Appearing Correctly in Medical Theme

The tablet menu of my website exp.medicaltourismco.com looks very crowded as the main menu items further have submenu parts. Can I add a collapsible menu? How can I make the menu look less crowded?

Hi!
You can change paddings in the code:

#mainmenu li a {
		text-align:center;
		color:#757575;
		display:block;
		text-decoration:none;
		font-family:'Oswald';
		padding:19px 35px 1px 01px;
		font-size:15px;
		text-transform: uppercase;                

	}

in style.css or edit the header.php and functions.php files to create an extra menu for your wordpress site. This instruction can be helpful: http://codex.wordpress.org/Function_Reference/wp_create_nav_menu