Even though I have utilized text-align: center, the style of .main-nav did not change. What is the most effective way to center this navigation menu?
/***** Navigation *****/
.main-nav { font-family: 'Lato', Helvetica, Arial, sans-serif; font-weight: 900; text-transform: uppercase; }
.main-nav li { float: left; position: relative; }
.main-nav li a { display: block; color: #333131; font-size: 16px; font-size: 1rem; line-height: 1; letter-spacing: 2.7px; padding: 12px 0; margin-right: 30px; }
.main-nav li a:hover { color: #000; }
.main-nav ul li a, .main-nav ul .current-menu-item:hover > a { border-bottom: 2px solid #fff; }
.main-nav ul .current-menu-item > a { border-bottom: 2px solid red; color: #000; }
.main-nav ul ul li a, .main-nav ul ul .current-menu-item:hover > a, .main-nav ul ul .current-menu-item > a { border: none; }
.main-nav ul li:hover > ul { display: block; background: #fff; z-index: 9999; }
.main-nav ul ul { display: none; position: absolute; left: -20px; }
.main-nav ul ul li { padding: 0 20px; width: 13rem; background: #f6f6f6; }
.main-nav ul ul ul { left: 100%; top: 0; }