Use a Moodle installation that is accessible from the web. Select the 'Clean' theme. Create a quiz with one question with feedback. Take the quiz and show the feedback. Run the site though 'http://wave.webaim.org/' and confirm for contrast is acceptable. In a course, create a page and add the following to the content in HTML mode: <p>MDL-50869<br></p><div class="control-group warning">.control-group.warning<p class="control-label">.control-label</p> input<input> <div class="input-prepend">.input-prepend <div class="add-on">.add-on</div></div></div><p class="text-warning">.text-warning<br></p><p></p><div class="environmenttable">.environmenttable<p class="warn">p.warn</p></div><p></p><p class="statuswarning">.statuswarning</p><div id="page-admin-report-backups-index">#page-admin-report-backups-index <p class="backup-warning">.backup-warning</p></div><p class="maintenancewarning warning">.maintenancewarning.warning</p><div class="formulation">.formulation select.partiallycorrect,<select class="partiallycorrect"> <option value="mdl">Moodle</option> <option value="bb">BlackBorg</option> <option value="wp">Wordpress</option> <option value="vi">Vi</option></select></div><div class="formulation">.formulation input.partiallycorrect<input class="partiallycorrect"></div><p class="connecting">.connecting<br></p><p><br></p> Which contains all of the selectors that use @warningText when you search the LESS files of the '/theme/bootstrapbase/less' folder. Confirm that all are visually acceptable, type as required into the input boxes. You will find that the maintenance selector floats on the page.