css-pseudo-class-checked
RUN
<!DOCTYPE html> <html> <head> <style> input:checked { height: 30px; width: 30px; } </style> </head> <body> <form> <input type="radio" checked="checked" value="male" name="gender">đúng<br> <input type="radio" value="female" name="gender">sai<br> <input type="checkbox" checked="checked" value="Bike">giá trị 1<br> <input type="checkbox" value="Car">giá trị 2 <br> <input type="checkbox" value="Car">giá trị 3 </form> </body> </html>
PHÓNG TO