Percy examples combination - base/lists (#5147)

* base/lists

* spacing option in example template

* rm combined.scss (superseded by rem spacing)

templates/docs/examples/base/lists/combined.html

@@ -0,0 +1,12 @@
+{% extends "_layouts/examples.html" %}
+{% block title %}Lists / Combined{% endblock %}
+
+{% block standalone_css %}base{% endblock %}
+
+{% block content %}
+{% with is_combined = true %}
+<section>{% include 'docs/examples/base/lists/definition-list.html' %}</section>
+<section>{% include 'docs/examples/base/lists/ordered-list.html' %}</section>
+<section>{% include 'docs/examples/base/lists/unordered-list.html' %}</section>
+{% endwith %}
+{% endblock %}