wordpress-simple-dropdown-menu.scss

// custom menu styles

$menu-bkg: #666;

/* Since we'll have the "ul li" "float:left"
 * we need to add a clear after the container. */

nav:after {
	content:"";
	display:table;
	clear:both;
}

/* Removing padding, margin and "list-style" from the "ul",
 * and adding "position:reltive" */
nav {
	ul {
		padding: 0;
		margin: 0;
		list-style: none;
		position: relative;
		/* Positioning the navigation items inline */
		li {
			margin: 0px;
			display:inline-block;
			float: left;
			background-color: $menu-bkg;
		}
	}
	> ul > li {
		border-radius: 3px;
		margin-left: 5px;
	}
	/* Styling the links */
	a {
		display: block;
		padding: 0 20px;	
		color: #FFF;
		font-size: 16px;
		line-height: 40px;
		text-decoration: none;
		/* Background color change on Hover */
		&:hover {
			background: darken($menu-bkg, 10%);
		}
	}
	/* Hide Dropdowns by Default
 	* and giving it a position of absolute */
	ul ul {
		display: none;
		position: absolute; 
		/* has to be the same number as the "line-height" of "nav a" */
		top: 40px; 
	}
	/* Display Dropdowns on Hover */
	ul li:hover > ul {
		display:inherit;
	}
	/* First Tier Dropdown */
	ul ul li {
		width: 170px;
		float: none;
		display: list-item;
		position: relative;
	}

	/* Second, Third and more Tiers	
	 * We move the 2nd and 3rd etc tier dropdowns to the left
	 * by the amount of the width of the first tier.
	*/
	ul ul ul li {
		position: relative;
		top: -40px;
		/* has to be the same number as the "width" of "nav ul ul li" */ 
		left: 170px; 
	}
}