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<!DOCTYPE html> <html> <head> <title>Xem ví dụ</title> <style type="text/css"> div{ border:100px solid black; /*BƯỚC 1*/ border-image-source:url(https://y2graphic.com/wp-content/uploads/2025/02/anh-bo-goc.jpg); /*BƯỚC 2*/ border-image-slice:80; /*BƯỚC 3*/ } </style> </head> <body> <div> <h1>WEB CƠ BẢN</h1> </div> </body> </html>
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