I am trying to add an additional class to the breadcrumbs block via a layout XML update. For example, I want the following line of code that appears below the header block by default in the blank theme:
To become as shown below on every page in the site:
<div class="breadcrumbs additional-class"></div>
So far I have added the following line of code to the app/design/frontend/[Vendor_Name]/[theme_dir]/Magento_Theme/layout/default.xml file:
<referenceBlock name="breadcrumbs" htmlClass="breadcrumbs container-fluid" />
After clearing all caches the change seems to have no effect on the frontend. Has anybody had any experience trying to change the class of the breadcrumbs container div?