Horizontal full width menu

Add a horizontal menu displaying on the full container width.

HTML and WordPress menu function:

<?php wp_nav_menu( array(
		'theme_location' => 'footer-menu',
		'menu_class'     => 'footer-menu',
		'menu_id'        => 'horizontal-menu-list'
	) ); ?>

CSS code:

ul#horizontal-menu-list {
	display: table;
	width: 100%;
	padding: 60px 0;
	margin-left: 0;
}
ul#horizontal-menu-list li {
	display: table-cell;
}
ul#horizontal-menu-list li:first-child a {
	text-align: left;
}
ul#horizontal-menu-list a {
	display: block;
	border: 0;
	text-align: center;
	margin: 0 5px;
	font-weight: 700;
	font-size: 16px;
	line-height: 24px;
	text-transform: uppercase;
	letter-spacing: 0.01em;
	color: #777;
}