As an example, I used the app.css to attempt to hide radio buttons in order to style them only showing the labels. I first tried to do this applying to all inputs of the type radio, then all inputs with the name of the specific group I was using. When that didn't work, I simply tried using an ID for one of the buttons but nothing seemed to work. When I insert the style="display: none;" code using in-line styling in the HTML, it works fine.
I haven't changed any information in the <head> tag or the <script> tags at the bottom of the page.
Thanks in advance for the help!