To customize your filters’ appearance please visit the annasta Filters section of your WordPress Customizer (see Appearance > Customize > annasta Filters).
Please enable the “Default” style to be able to use all the options of annasta Filters Customizer.
For backwards compatibility with sites that have their styling dependent on old annasta style sheet, it is included in the plugin package under the name of “Deprecated since version 1.3.0”. Use it only if your custom styling “breaks” when changing to the new “Default” style. This stylesheet does not support the options of annasta Filters Customizer.