I have made a Web in Java EE and incorporated Bootstrap styles.
Here you can see the files I use.
I made a Webview a long time ago and everything worked fine showing me what it looks like in the browser, I had to format the computer I downloaded the project from GITHUB and now it only shows me this way:
I have done everything, I went back to doing the Webview in different ways and nothing or maybe I should use a library that I do not remember but can not load the style that I repeat before if I loaded.
The code of the WebView