Add missing csslint config.
diff --git a/.csslintrc b/.csslintrc
new file mode 100644
index 0000000..23e9139
--- /dev/null
+++ b/.csslintrc
@@ -0,0 +1,20 @@
+{
+  "adjoining-classes": false,
+  "box-sizing": false,
+  "box-model": false,
+  "compatible-vendor-prefixes": false,
+  "floats": false,
+  "font-sizes": false,
+  "gradients": false,
+  "important": false,
+  "known-properties": false,
+  "outline-none": false,
+  "qualified-headings": false,
+  "regex-selectors": false,
+  "text-indent": false,
+  "unique-headings": false,
+  "universal-selector": false,
+  "unqualified-attributes": false,
+  "overqualified-elements": false,
+  "ids": false
+}