Show me the steps to solve Unit J$,$ i have already done the work and followed the instructions but can't figured out where i've gone wrong.

a$.$ In your editor, open HTM J$-7.$html from the IC$2$ folder where you store your Data Files for this unit, save it as signup.html$,$ then repeat to save HTM J$-8.$css as styles.css$.$ In the comment at the top of each file, enter your name and today's date where indicated, then save the files..

b$.$ In signup.html$,$ below the h$2$ element, add a form element containing $5$ fieldsets. Add the following class values to the fieldsets: contactinfo, ageinfo, membershipinfo, additionalinfo, submitbutton. Add legends to the first four fieldsets containing the text Contact Information, Age Range, Special Memberships, and Additional Information.