=========================
Universal selectors
=========================

* {}

---

(stylesheet
  (rule_set (selectors (universal_selector)) (block)))

=========================
Type selectors
=========================

div, span {}

---

(stylesheet
  (rule_set (selectors (type_selector (identifier)) (type_selector (identifier))) (block)))

=========================
Class selectors
=========================

.class-a {}
.class-b, .class-c {}

---

(stylesheet
  (rule_set (selectors (class_selector (identifier))) (block))
  (rule_set (selectors (class_selector (identifier)) (class_selector (identifier))) (block)))

=========================
Id selectors
=========================

#some-id {}

---

(stylesheet
  (rule_set (selectors (id_selector (identifier))) (block)))

=========================
Attribute selectors
=========================

[a] {}
[b=c] {}
[d~=e] {}

---

(stylesheet
  (rule_set (selectors (attribute_selector (property_name (identifier)))) (block))
  (rule_set (selectors (attribute_selector (property_name (identifier)) (property_value))) (block))
  (rule_set (selectors (attribute_selector (property_name (identifier)) (property_value))) (block)))

=========================
Child selectors
=========================

a > b {}
c > d > e {}

---

(stylesheet
  (rule_set
    (selectors (child_selector (type_selector (identifier)) (type_selector (identifier))))
    (block))
  (rule_set
    (selectors (child_selector
      (child_selector (type_selector (identifier)) (type_selector (identifier)))
      (type_selector (identifier))))
    (block)))

=========================
Descendant selectors
=========================

a b {}
c d e {}

---

(stylesheet
  (rule_set
    (selectors (descendant_selector (type_selector (identifier)) (type_selector (identifier))))
    (block))
  (rule_set
    (selectors (descendant_selector
      (descendant_selector (type_selector (identifier)) (type_selector (identifier)))
      (type_selector (identifier))))
    (block)))