--- /dev/null
+# selector-type-case
+
+Specify lowercase or uppercase for type selectors.
+
+```css
+ a {}
+/** ↑
+ * This is type selector */
+```
+
+## Options
+
+`string`: `"lower"|"upper"`
+
+### `"lower"`
+
+The following patterns are considered violations:
+
+```css
+A {}
+```
+
+```css
+LI {}
+```
+
+The following patterns are *not* considered violations:
+
+```css
+a {}
+```
+
+```css
+li {}
+```
+
+### `"upper"`
+
+The following patterns are considered violations:
+
+```css
+a {}
+```
+
+```css
+li {}
+```
+
+The following patterns are *not* considered violations:
+
+```css
+A {}
+```
+
+```css
+LI {}
+```