and, updated to do this properly: added "h" to spell demerphq correctly, and <spoiler> ... <</spoiler>,rather than <class=spoiler>... which is deprecated per tye for direct use in nodes.
Please don't use class="spoiler" directly in nodes. The class is there for you to use to customize in your CSS settings. Using class="style" instead of <spoiler> tags just gets in the way of visitors selecting the spoiler presentation that best suites their environment and tastes.