Sublime Text
<!DOCTYPE html> <html> <head> <style type="text/css"> textarea:required{ background-color:pink; } </style> </head> <body> <form method="POST"> <input type="text"> <hr> <input type="text" required> <hr> <textarea cols="30" rows="5"></textarea> <hr> <textarea cols="30" rows="5" required></textarea> <hr> <button type="submit">Submit</button> </form> </body> </html>
<!DOCTYPE html> <html> <head> <style type="text/css"> textarea:required{ background-color:pink; } </style> </head> <body> <form method="POST"> <input type="text"> <hr> <input type="text" required> <hr> <textarea cols="30" rows="5"></textarea> <hr> <textarea cols="30" rows="5" required></textarea> <hr> <button type="submit">Submit</button> </form> </body> </html>