#site-navigation.fixed{position:fixed;top:0;left:0;right:0;z-index:1000;background:#fff;box-shadow:0 2px 10px rgba(0,0,0,0.1);transition:all 0.3s ease}#site-navigation.fixed .container{padding:10px 0}#site-navigation.fixed{animation:slideDown 0.3s ease-out}@keyframes slideDown{from{transform:translateY(-100%);opacity:0}to{transform:translateY(0);opacity:1}}@media (max-width:768px){#site-navigation.fixed{padding:5px 0}}