Because the vendor dashboard is built in a way that's disconnected from the theme, typical methods of adding CSS do not work there. Here is how to do it:
Add a PHP code snippet to your site, as follows:
add_action('marketking_dashboard_head', function(){
?>
<style type="text/css">
.your_css_here{
color: blue;
}
</style>
<?php
});
You can place any custom CSS between the <style> </style> tags. This CSS will only apply on the vendor dashboard page.
A PHP snippet can be added to functions.php or by following our snippets guide here.