1<!DOCTYPE html> 2<html> 3 <head></head> 4 <body> 5 <h3> 6 Header 7 </h3> 8 <h2 id="header.header_test"> 9 Header Test 10 </h2> 11 <p> 12 Testing headers without sections. 13 </p> 14 <h2 id="header._not_an_id"> 15 :Not an Id 16 </h2> 17 <p> 18 Paragraph. 19 </p> 20 <h3 id="header._not_an_id_again"> 21 :Not an Id again 22 </h3> 23 <p> 24 Paragraph. 25 </p> 26 </body> 27</html> 28