Share Emphasize that students should know which HTML tags are self-contained to make writing and debugging code easier. with FacebookShare Emphasize that students should know which HTML tags are self-contained to make writing and debugging code easier. with Twitter Self-contained tags, empty elements, must be properly closed. Some such tags are <hr/>, <br/>, <input … />, <img/>, etc. More about this tip Tags Content Misconceptions Development Methods HTML External Source Interview with Lynda Louis. Twitter: @lrlouis Other Tips By Other Tips By Lynda Louis