ToAdd</td><td>String</td><td>yes</td><td>Classname to add</td></tr></tbody></table><p class="vjs-only"><em id="addClassFooter">Defined in <a href="https://github.com/videojs/video.js/blob/master/src/js/component.js#L892">https://github.com/videojs/video.js/blob/master/src/js/component.js line number: 892</a></em></p><p><a href="#top">[back to top]</a></p></div><div id="MethodsbuildCSSClass"><h3 id="buildCSSClassHeader">buildCSSClass()</h3><div id="buildCSSClassDescription" class="description"><p>Allows sub 