title: Validation (CSS 4.0): "-webkit-text-decoration" is not a known CSS property name
body: <p>I followed the course from Udemy The Complete ASP.NET MVC 5 Course, but when he uses bootstrap works there but it simply didn't work here I am stuck because of this error above. I already have bootstrap the latest version, jQuery the lastest version, popper.js and I have installed web essentials, some people said that you just need to install web essentials to solve the problem, but it didn't work here too.
  <a href="https://i.stack.imgur.com/MdiYR.png" rel="nofollow noreferrer">that's is the initial page that is doesn't work fine</a>
  <a href="https://i.stack.imgur.com/cMv4w.png" rel="nofollow noreferrer">these are the options of the menu</a></p>
  
  <p>that's the problem it doesn't show exactly what should show</p>