--- /dev/null
+# media-feature-range-operator-space-before
+
+Require a single space or disallow whitespace before the range operator in media features.
+
+```css
+@media (width >= 600px) {}
+/** ↑
+ * The space before this */
+```
+
+## Options
+
+`string`: `"always"|"never"`
+
+### `"always"`
+
+There *must always* be a single space before the range operator.
+
+The following patterns are considered violations:
+
+```css
+@media (width>=600px) {}
+```
+
+```css
+@media (width>= 600px) {}
+```
+
+The following patterns are *not* considered violations:
+
+```css
+@media (width >=600px) {}
+```
+
+```css
+@media (width >= 600px) {}
+```
+
+### `"never"`
+
+There *must never* be whitespace before the range operator.
+
+The following patterns are considered violations:
+
+```css
+@media (width >=600px) {}
+```
+
+```css
+@media (width >= 600px) {}
+```
+
+The following patterns are *not* considered violations:
+
+```css
+@media (width>=600px) {}
+```
+
+```css
+@media (width>= 600px) {}
+```