How can I add CSS code for the drop down menu.? #cssmenu, #cssmenu ul, #cssmenu ul li, #cssmenu ul li a { margin: 0; padding: 0; border: 0; list-style: none; line-height: 1; display: block; position: relative; -webkit-box-sizing: border-box; -moz-box-sizing: border-box; box-sizing: border-box; } #cssmenu { width: auto; font-family: Helvetica, Arial, sans-serif; color: #ffffff; } #cssmenu.align-right ul li { float: right; border-right: 0; border-left: 1px solid rgba(0, 0, 0, 0.22); } #cssmenu.align-right ul li a { border-right: 0; border-left: 1px solid rgba(255, 255, 255, 0.15); } #cssmenu ul { background: #222222; /* Old browsers */ background: -moz-linear-gradient(bottom, #000000 0%, #222222 50%, #3c3c3c 51%, #393939 78%, #888888 100%); background: -webkit-linear-gradient(bottom, #000000 0%, #222222 50%, #3c3c3c 51%, #393939 78%, #888888 100%); background: -o-linear-gradient(bottom, #000000 0%, #222222 50%, #3c3c3c 51%, #393939 78%, #888888 100%); background: -ms-linear-gradient(bottom, #000000 0%, #222222 50%, #3c3c3c 51%, #393939 78%, #888888 100%); background: linear-gradient(to top, #000000 0%, #222222 50%, #3c3c3c 51%, #393939 78%, #888888 100%); } #cssmenu:after, #cssmenu ul:after { content: "."; display: block; clear: both; visibility: hidden; line-height: 0; height: 0; } #cssmenu ul li { float: left; display: block; border-right: 1px solid rgba(0, 0, 0, 0.22); z-index: 1; } #cssmenu ul li::after { content: ""; width: 100%; height: 8px; position: absolute; border-top-left-radius: 50% 4px; border-top-right-radius: 50% 4px; background: -webkit-linear-gradient(bottom, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0) 60%, #222222 61%, #222222 100%); background: -o-linear-gradient(bottom, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0) 60%, #222222 61%, #222222 100%); background: -ms-linear-gradient(bottom, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0) 60%, #222222 61%, #222222 100%); background: linear-gradient(to top, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0) 60%, #222222 61%, #222222 100%); background: -moz-linear-gradient(bottom, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0)); z-index: 2; bottom: 10px; } #cssmenu ul li a { display: block; padding: 12px 18px; text-decoration: none; font-size: 12px; text-transform: uppercase; color: #ffffff; border-right: 1px solid rgba(255, 255, 255, 0.15); z-index: 3; } #cssmenu ul li a:hover, #cssmenu ul li.active a { color: #ffffff; } #cssmenu ul li:hover, #cssmenu ul li.active { background: #1275ae; /* Old browsers */ background: -moz-linear-gradient(bottom, #0b4669 0%, #1275ae 50%, #1794dc 51%, #1691d8 78%, #98d2f4 100%); background: -webkit-linear-gradient(bottom, #0b4669 0%, #1275ae 50%, #1794dc 51%, #1691d8 78%, #98d2f4 100%); background: -o-linear-gradient(bottom, #0b4669 0%, #1275ae 50%, #1794dc 51%, #1691d8 78%, #98d2f4 100%); background: -ms-linear-gradient(bottom, #0b4669 0%, #1275ae 50%, #1794dc 51%, #1691d8 78%, #98d2f4 100%); background: linear-gradient(to top, #0b4669 0%, #1275ae 50%, #1794dc 51%, #1691d8 78%, #98d2f4 100%); } #cssmenu ul li:hover::after, #cssmenu ul li.active::after { background: -webkit-linear-gradient(bottom, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0) 60%, #1275ae 61%, #1275ae 100%); background: -o-linear-gradient(bottom, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0) 60%, #1275ae 61%, #1275ae 100%); background: -ms-linear-gradient(bottom, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0) 60%, #1275ae 61%, #1275ae 100%); background: linear-gradient(to top, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0) 60%, #1275ae 61%, #1275ae 100%); background: -moz-linear-gradient(bottom, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0)); } Code (markup):