{% stylesheets 'bundles/app/css/*' filter='cssrewrite' %}
<link rel="stylesheet" href="{{ asset_url }}" />
{% endstylesheets %}
I've tried using Assetic within Symfony 3 to fetch CSS files. However, despite looking in Symfony's documentation, I have no idea where this 'bundles/app/css/*' actually is within Symfony. I've tried putting a css file in /app/css/ but no css files seem to load on load.