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16<p class="font-semibold text-foreground min-w-0 truncate text-sm"><a title="U40 Há»c Code - Láºp trình & Há» Äiá»u hà nh" href="/">U40 Há»c Code - Láºp trình & Há» Äiá»u hà nh</a></p></div><nav aria-label="Main navigation" class="flex justify-center w-full"><nav aria-label="Main" data-orientation="horizontal" dir="ltr" data-slot="navigation-menu" data-viewport="false" class="group/navigation-menu relative flex flex-1 items-center max-w-max justify-center"><div style="position:relative"><ul data-orientation="horizontal" data-slot="navigation-menu-list" class="group flex flex-1 list-none items-center flex-nowrap justify-center gap-1 text-muted-foreground text-sm" dir="ltr"><li data-slot="navigation-menu-item" class="relative"><a data-slot="navigation-menu-link" class="data-[active=true]:focus:bg-accent data-[active=true]:hover:bg-accent data-[active=true]:bg-accent/50 data-[active=true]:text-accent-foreground focus:bg-accent focus:text-accent-foreground [&_svg:not([class*='text-'])]:text-muted-foreground flex-col p-2 outline-none focus-visible:outline-1 [&_svg:not([class*='size-'])]:size-4 inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-colors focus-visible:outline-hidden focus-visible:ring-1 focus-visible:ring-ring disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:size-4 [&_svg]:shrink-0 hover:bg-accent hover:text-accent-foreground h-9 px-4 py-2" data-radix-collection-item="" href="/series/mang-may-tinh">Mạng máy tÃnh</a></li><li data-slot="navigation-menu-item" class="relative"><a data-slot="navigation-menu-link" class="data-[active=true]:focus:bg-accent data-[active=true]:hover:bg-accent data-[active=true]:bg-accent/50 data-[active=true]:text-accent-foreground focus:bg-accent focus:text-accent-foreground [&_svg:not([class*='text-'])]:text-muted-foreground flex-col p-2 outline-none focus-visible:outline-1 [&_svg:not([class*='size-'])]:size-4 inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-colors focus-visible:outline-hidden focus-visible:ring-1 focus-visible:ring-ring disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:size-4 [&_svg]:shrink-0 hover:bg-accent hover:text-accent-foreground h-9 px-4 py-2" data-radix-collection-item="" href="/series/he-dieu-hanh">Há» Äiá»u hà nh (OS)</a></li><li data-slot="navigation-menu-item" class="relative"><a data-slot="navigation-menu-link" class="data-[active=true]:focus:bg-accent data-[active=true]:hover:bg-accent data-[active=true]:bg-accent/50 data-[active=true]:text-accent-foreground focus:bg-accent focus:text-accent-foreground [&_svg:not([class*='text-'])]:text-muted-foreground flex-col p-2 outline-none focus-visible:outline-1 [&_svg:not([class*='size-'])]:size-4 inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-colors focus-visible:outline-hidden focus-visible:ring-1 focus-visible:ring-ring disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:size-4 [&_svg]:shrink-0 hover:bg-accent hover:text-accent-foreground h-9 px-4 py-2" data-radix-collection-item="" href="/series/dong-bo-va-da-luong">Äá»ng bá» và Äa luá»ng</a></li><li data-slot="navigation-menu-item" class="relative"><button id="radix-_R_ct95bsnpfalb_" data-state="closed" aria-expanded="false" data-slot="dropdown-menu-trigger" class="group w-max focus:bg-accent focus:text-accent-foreground data-[state=open]:hover:bg-accent data-[state=open]:text-accent-foreground data-[state=open]:focus:bg-accent outline-none focus-visible:outline-1 group inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-colors focus-visible:outline-hidden focus-visible:ring-1 focus-visible:ring-ring disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:size-4 [&_svg]:shrink-0 hover:bg-accent py-2 h-9 px-3 text-muted-foreground hover:text-foreground bg-transparent shadow-none data-[state=open]:bg-transparent" type="button" aria-haspopup="menu" data-radix-collection-item="">More<!-- --> <span class="ml-1 flex items-center justify-center"><i class="fa-jelly fa-regular fa-angle-down size-3 leading-none transition duration-300 group-data-[state=open]:rotate-180" aria-hidden="true"></i></span></button></li></ul></div></nav></nav><div class="flex items-center justify-end gap-3 text-muted-foreground"><button class="gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-colors focus-visible:outline-hidden focu
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