--- /dev/null
+# declaration-bang-space-after
+
+Require a single space or disallow whitespace after the bang of declarations.
+
+```css
+a { color: pink !important; }
+/** ↑
+ * The space after this exclamation mark */
+```
+
+## Options
+
+`string`: `"always"|"never"`
+
+### `"always"`
+
+There *must always* be a single space after the bang.
+
+The following patterns are considered violations:
+
+```css
+a { color: pink !important; }
+```
+
+```css
+a { color: pink !important; }
+```
+
+The following patterns are *not* considered violations:
+
+```css
+a { color: pink ! important; }
+```
+
+```css
+a { color: pink! important; }
+```
+
+### `"never"`
+
+There *must never* be whitespace after the bang.
+
+The following patterns are considered violations:
+
+```css
+a { color: pink ! important; }
+```
+
+```css
+a { color: pink! important; }
+```
+
+The following patterns are *not* considered violations:
+
+```css
+a { color: pink !important; }
+```
+
+```css
+a { color:pink!important; }
+```