<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title></title> </head> <body> <form> <input type="text" required="true"> <input type="text" > <input type="submit" /> </form> </body> </html> <!DOCTYPE html> <html> <head> <meta charset=
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title></title> </head> <body> <form> <input type="text" required="true"> <input type="text" > <input type="submit" /> </form> </body> </html> <!DOCTYPE html> <html> <head> <meta charset=