{% for p in site.pages %}
{% assign scss_ext = p.path | slice: -5, 5 %}
{% assign css_ext = p.path | slice: -4, 4 %}
{% assign folder_path = p.path | slice: 0, 4 %}
{% if folder_path == 'css/' and scss_ext == '.scss' %}
{% elsif folder_path == '/css/' and css_ext == '.css' %}
{% endif %}
{% endfor %}