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<!DOCTYPE html> <html> <head> <title>Xem ví dụ</title> <style> a.hello:hover{ color:red; } </style> </head> <body> <a href=".." class="hello">WEB CƠ BẢN</a> </body> </html>
<!DOCTYPE html> <html> <head> <title>Xem ví dụ</title> <style> a.hello:hover{ color:red; } </style> </head> <body> <a href=".." class="hello">WEB CƠ BẢN</a> </body> </html>