Button and TabConrol Mixin

Hello,

I’ve tried to follow the deployment video explaining how to add a mixin file to change a control appearance but not sure why it’s not working for me.

I’ve attached the sample project written in vb.net and trying to change appearance of button and Tab control.

For tab control I’ve tried to use CSS with css styles added in the default.html that’s also not working.

Private Sub FrmMainWindow_Load(sender As Object, e As EventArgs) Handles Me.Load
TabControl1.CssClass = “myTabs”
End Sub

<style>

.mytabs .tab {
background-color: #2c3e50;
color: red;
}

.mytabs .tab-page {
background-color: #2c3e50;
color: red;
}

.mytabs .tab-page:hover {
background-color: #34495e;
}

.mytabs .tab-page[selected] {
background-color: #1abc9c;
color: white;
}

</style>