.navbar-nav{display:flex;flex-direction:row;gap:10px}.dropdown-menu{position:absolute;top:100%;left:0;padding:0;margin:0;list-style:none;background:#fff;border:1px solid #ccc;border-radius:5px;opacity:0;transform:translateY(-10px);visibility:hidden;transition:opacity .3s,transform .3s,visibility .3s;z-index:1000}.dropdown-menu.show{opacity:1;transform:translateY(0);visibility:visible}.dropdown-item{position:relative;padding:10px 20px;color:#333;text-decoration:none;display:block;transition:background-color .3s,color .3s;overflow:hidden;z-index:1}.dropdown-item:hover{background-color:#007bff;color:#fff}.dropdown-item::before{content:'';position:absolute;top:50%;left:50%;width:0;height:0;background:rgba(255,255,255,.2);border-radius:50%;transform:translate(-50%,-50%);transition:width .6s,height .6s;z-index:0}.dropdown-item:hover::before{width:200px;height:200px}.dropdown-menu.closing{opacity:0;transform:translateY(-10px);visibility:hidden}