header,footer{background-color:#1da1f2;color:#fff;text-align:center;padding:10px 0}nav ul{list-style:none;padding:0;text-align:center}nav ul li{display:inline;margin:0 10px;position:relative}nav ul li a{color:#fff;text-decoration:none}nav ul li:hover .submenu,.submenu:hover{display:block}.submenu{display:none;position:absolute;background-color:#1da1f2;left:0;top:100%;min-width:150px;box-shadow:0 2px 8px #0000001a;padding:5px 0}.submenu li{display:block;padding:5px 10px}