Cannot get CCS applied

Live again now. I did some cleaning up and deleted the folder

I'm also struggling with changing the caption font color in WebPageControl.
I see:

.nav-link {
    display: block;
    padding: 0.5rem 1rem;
.nav-link {
    display: block;
    padding: 0.5rem 1rem;
    color: #0d6efd;
    text-decoration: none;
    transition: color .15s ease-in-out,background-color .15s ease-in-out,border-color .15s ease-in-out;

I have tried add CSS

.redButton2 {

    color: red !important ;


Also changing color in various parts of the myTheme.css didn't work.

This CSS:

      .tablist { list-style-type: none; margin: 0px; padding: 0px; display: inline-block;}
      .nav-item { float:left;}
      .nav-link { color:red; display:block; text-align:center; text-decoration:none;}
      .active { background-color: silver;}

makes the tab text red when you set WebPageControl.ElementClassName = 'tablist'

I see there is a URL params in the options. How do I add a random number to that ?
Or what is the code to do it withing the app please.

The Options setting is static. There is at this moment no built-in capability to generate a random number.