How do I change the style of the accordion headers in ngx-bootstrap? I tried everything. I copy pasted the code from the documentation for customizing the headers but it does not work. The tag generates a bunch of other tags with classes (mostly bootstrap classes). I get the css path to the heading from the Chrome's Inspector, but I can't change it. The heading/link is in a <button> tag and even when I say button { color: red !important; } it does not work. I tried everything, but it does not work. Thanks in advance! Continue reading...