Sublime Text
<!DOCTYPE html> <html> <body> <iframe src="http://webcoban.vn" srcdoc="<div style='border:1px solid black;border-radius:10px;padding:20px;margin:20px;'>Hello</div>"></iframe> </body> </html>
<!DOCTYPE html> <html> <body> <iframe src="http://webcoban.vn" srcdoc="<div style='border:1px solid black;border-radius:10px;padding:20px;margin:20px;'>Hello</div>"></iframe> </body> </html>