diff --git a/.gitignore b/.gitignore
index 709fd09..0e25010 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,7 @@
 !/.eslintrc.json
 !/.travis.yml
 package-lock.json
+yarn.lock
 /bower_components/
 /node_modules/
 /output/
diff --git a/bower.json b/bower.json
index 3088ad9..e482e43 100644
--- a/bower.json
+++ b/bower.json
@@ -13,5 +13,8 @@
     "output",
     "bower.json",
     "package.json"
-  ]
+  ],
+  "dependencies": {
+    "purescript-web-dom": "^1.0.0"
+  }
 }
diff --git a/package.json b/package.json
index 02e36ea..7d759c8 100644
--- a/package.json
+++ b/package.json
@@ -5,9 +5,12 @@
     "build": "eslint src && pulp build -- --censor-lib --strict"
   },
   "devDependencies": {
-    "eslint": "^4.19.1",
-    "pulp": "^12.2.0",
-    "purescript-psa": "^0.6.0",
+    "eslint": "^5.2.0",
+    "pulp": "^12.3.0",
+    "purescript-psa": "^0.7.2",
     "rimraf": "^2.6.2"
+  },
+  "dependencies": {
+    "purescript": "^0.12.0"
   }
 }
diff --git a/src/Web/CSSOM.js b/src/Web/CSSOM.js
new file mode 100644
index 0000000..c7089bc
--- /dev/null
+++ b/src/Web/CSSOM.js
@@ -0,0 +1,8 @@
+// Web.CSSOM
+"use strict";
+
+exports.getStyleSheets = function(doc) {
+  return function() {
+    return doc.styleSheets;
+  };
+};
diff --git a/src/Web/CSSOM.purs b/src/Web/CSSOM.purs
new file mode 100644
index 0000000..26c471a
--- /dev/null
+++ b/src/Web/CSSOM.purs
@@ -0,0 +1,9 @@
+module Web.CSSOM
+  ( getStyleSheets
+  ) where
+
+import Effect (Effect)
+import Web.CSSOM.Internal.Types (StyleSheetList)
+import Web.DOM.Document (Document)
+
+foreign import getStyleSheets :: Document -> Effect StyleSheetList
diff --git a/src/Web/CSSOM/CSSStyleSheet.js b/src/Web/CSSOM/CSSStyleSheet.js
new file mode 100644
index 0000000..bc04cc0
--- /dev/null
+++ b/src/Web/CSSOM/CSSStyleSheet.js
@@ -0,0 +1,31 @@
+"use strict";
+
+var getProp = function(name) {
+  return function(sheet) {
+    return sheet[name];
+  };
+};
+
+exports.disabled = getProp("disabled");
+exports._href = getProp("href");
+exports._ownerNode = getProp("ownerNode");
+exports._parentStyleSheet = getProp("parentStyleSheet");
+exports._title = getProp("title");
+exports._type = getProp("type");
+
+exports.setDisabled = function(bool) {
+  return function(sheet) {
+    return function() {
+      sheet.disabled = bool;
+      return {};
+    };
+  };
+};
+
+exports.toggleDisabled = function(sheet) {
+  return function() {
+    var bool = !sheet.disabled;
+    sheet.disabled = bool;
+    return bool;
+  };
+};
diff --git a/src/Web/CSSOM/CSSStyleSheet.purs b/src/Web/CSSOM/CSSStyleSheet.purs
new file mode 100644
index 0000000..3d6c732
--- /dev/null
+++ b/src/Web/CSSOM/CSSStyleSheet.purs
@@ -0,0 +1,47 @@
+module Web.DOM.CSSStyleSheet
+  ( module Exports
+  , disabled
+  , setDisabled
+  , toggleDisabled
+  , href
+  , ownerNode
+  , parentStyleSheet
+  , title
+  , typeString
+  ) where
+
+import Prelude
+
+import Data.Maybe (Maybe)
+import Data.Nullable (Nullable, toMaybe)
+import Effect (Effect)
+import Web.CSSOM.Internal.Types (CSSStyleSheet) as Exports
+import Web.CSSOM.Internal.Types (CSSStyleSheet)
+import Web.DOM.Internal.Types (Element)
+
+foreign import disabled :: CSSStyleSheet -> Boolean
+
+foreign import setDisabled :: Boolean -> CSSStyleSheet -> Effect Unit
+
+foreign import toggleDisabled :: CSSStyleSheet -> Effect Boolean
+
+href :: CSSStyleSheet -> Maybe String
+href = toMaybe <<< _href
+
+ownerNode :: CSSStyleSheet -> Maybe Element
+ownerNode = toMaybe <<< _ownerNode
+
+parentStyleSheet :: CSSStyleSheet -> Maybe CSSStyleSheet
+parentStyleSheet = toMaybe <<< _parentStyleSheet
+
+title :: CSSStyleSheet -> Maybe String
+title = toMaybe <<< _title
+
+typeString :: CSSStyleSheet -> Maybe String
+typeString = toMaybe <<< _type
+
+foreign import _href :: CSSStyleSheet -> Nullable String
+foreign import _ownerNode :: CSSStyleSheet -> Nullable Element
+foreign import _parentStyleSheet :: CSSStyleSheet -> Nullable CSSStyleSheet
+foreign import _title :: CSSStyleSheet -> Nullable String
+foreign import _type :: CSSStyleSheet -> Nullable String
diff --git a/src/Web/CSSOM/Internal/Types.purs b/src/Web/CSSOM/Internal/Types.purs
new file mode 100644
index 0000000..8f97417
--- /dev/null
+++ b/src/Web/CSSOM/Internal/Types.purs
@@ -0,0 +1,4 @@
+module Web.CSSOM.Internal.Types where
+
+foreign import data CSSStyleSheet :: Type
+foreign import data StyleSheetList :: Type
diff --git a/src/Web/CSSOM/StyleSheetList.js b/src/Web/CSSOM/StyleSheetList.js
new file mode 100644
index 0000000..67d5062
--- /dev/null
+++ b/src/Web/CSSOM/StyleSheetList.js
@@ -0,0 +1,21 @@
+"use strict";
+
+exports.length = function (list) {
+  return function () {
+    return list.length;
+  };
+};
+
+exports.toArray = function (list) {
+  return function () {
+    return Array.prototype.slice.call(list);
+  };
+};
+
+exports._item = function(index) {
+  return function(list) {
+    return function() {
+      return list.item(index);
+    };
+  };
+};
diff --git a/src/Web/CSSOM/StyleSheetList.purs b/src/Web/CSSOM/StyleSheetList.purs
new file mode 100644
index 0000000..1b8ce80
--- /dev/null
+++ b/src/Web/CSSOM/StyleSheetList.purs
@@ -0,0 +1,27 @@
+module Web.DOM.StyleSheetList
+  ( module Exports
+  , length
+  , item
+  , toArray
+  ) where
+
+import Prelude
+
+import Data.Maybe (Maybe)
+import Data.Nullable (Nullable, toMaybe)
+import Effect (Effect)
+import Web.CSSOM.Internal.Types (CSSStyleSheet, StyleSheetList) as Exports
+import Web.CSSOM.Internal.Types (CSSStyleSheet, StyleSheetList)
+
+-- | The number of items in a StyleSheetList.
+foreign import length :: StyleSheetList -> Effect Int
+
+-- | The elements of a NodeList represented in an array.
+foreign import toArray :: StyleSheetList -> Effect (Array CSSStyleSheet)
+
+-- | The item in a StyleSheetList at the specified index, or Nothing if no such
+-- | node exists.
+item :: Int -> StyleSheetList -> Effect (Maybe CSSStyleSheet)
+item i = map toMaybe <<< _item i
+
+foreign import _item :: Int -> StyleSheetList -> Effect (Nullable CSSStyleSheet)