点击运行
<!DOCTYPE html> <html> <head> <style> body { margin: 0; } * { box-sizing: border-box; } input, textarea { width: 100%; } </style> </head> <body> <form action="/action_page.php"> First name:<br> <input type="text" name="firstname" value="Mickey"><br> Last name:<br> <input type="text" name="lastname" value="Mouse"><br> Comments:<br> <textarea name="message" rows="5" cols="30">
运行结果
