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<!DOCTYPE html> <html> <head> <style> input:checked { height: 50px; width: 50px; } </style> </head> <body> <form action=""> <input type="radio" checked="checked" value="male" name="gender"> Male<br> <input type="radio" value="female" name="gender"> Female<br> <input type="checkbox" checked="checked" value="Bike"> I have a bike<br> <input type="checkbox" value="Car"> I have a car </form> </body> </html>