m-api-item-content"><div class="qm-api-description"><div class="qm-html-paragraph">The class given to the root element of a progress bar </div></div><div class="qm-api-group qm-api-extraClass-group"><div class="qm-api-group-header qm-api-extraClass-group-header qm-header-font">Extra Classes</div><div class="qm-api-item qm-api-extra-class qm-api-collapsible"><div class="qm-api-collapsible-heading"><div class="qm-api-collapsible-toggle"><i class="qm-api-chevron-icon"></i></div><div class="qm-api-collapsible-h