Bug / UI / Table headers colour for dark theme

[edyrkaj]

Describe the bug When you use the default project from the main branch -> Mosey theme it shows the Organization content with dark table. Using bootstrap dark theme for tables doesn't have a good UI for table headers and it is difficult to show the table head values.

To Reproduce Steps to reproduce the behavior:

1. Go to '...'
2. View the table headers
3. See error as it is shown in the screenshots

As I just started using Optimizely + EpiServer I am still confused where to add the css (style) fix for this bug. I've used my knowledge of master view pages and applied that change directly in the _MasterLayout.cshtml

<style type="text/css">
    .thead-dark tr > th { color: #fff !important; }
</style>

Expected behavior When we use thead dark for tables we need to use the inverse colour for table head values.

Screenshots

After css changes:

As you can see from the screenshots this small fix is applied for all tables with the same problem.

Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context Add any other context about the problem here.