diff --git a/lib/window_browser.rb b/lib/window_browser.rb
new file mode 100644
index 0000000..e6c3d15
--- /dev/null
+++ b/lib/window_browser.rb
@@ -0,0 +1,2 @@
+module WindowBrowser
+end
diff --git a/lib/window_browser/dom.rb b/lib/window_browser/dom.rb
new file mode 100644
index 0000000..f216771
--- /dev/null
+++ b/lib/window_browser/dom.rb
@@ -0,0 +1,45 @@
+require_relative 'node_types/text'
+require_relative 'node_types/element'
+
+module WindowBrowser
+  class Dom
+    attr_reader :root_node
+
+    def initialize(node)
+      @root_node = node
+    end
+
+    def self.text_node(string)
+      NodeTypes::Text.new(string: string)
+    end
+
+    def self.element_node(tag_name:, attributes: {}, children: [])
+      NodeTypes::Element.new(
+        tag_name: tag_name,
+        attributes: attributes,
+        children: children
+      )
+    end
+  end
+end
+
+dom = WindowBrowser::Dom.new(
+  WindowBrowser::Dom.element_node(
+    tag_name: 'div',
+    children: [
+      WindowBrowser::Dom.element_node(tag_name: 'div'),
+      WindowBrowser::Dom.element_node(tag_name: 'span'),
+      WindowBrowser::Dom.element_node(tag_name: 'p'),
+      WindowBrowser::Dom.element_node(
+        tag_name: 'div',
+        children: [
+          WindowBrowser::Dom.element_node(tag_name: 'div'),
+          WindowBrowser::Dom.element_node(tag_name: 'span'),
+          WindowBrowser::Dom.element_node(tag_name: 'p')
+        ]
+      )
+    ]
+  )
+)
+
+puts dom.root_node.children.count
diff --git a/lib/window_browser/node.rb b/lib/window_browser/node.rb
new file mode 100644
index 0000000..17867d3
--- /dev/null
+++ b/lib/window_browser/node.rb
@@ -0,0 +1,22 @@
+module WindowBrowser
+  class Node
+    attr_accessor :children
+
+    def initialize(children: [])
+      @children = children
+    end
+
+    def first_child
+      children.first
+    end
+
+    def children?
+      children.any?
+    end
+
+    def type
+      self.class
+    end
+  end
+end
+
diff --git a/lib/window_browser/node_types/element.rb b/lib/window_browser/node_types/element.rb
new file mode 100644
index 0000000..0102718
--- /dev/null
+++ b/lib/window_browser/node_types/element.rb
@@ -0,0 +1,16 @@
+require_relative '../node'
+
+module WindowBrowser
+  module NodeTypes
+    class Element < Node
+      attr_reader :tag_name, :attributes
+
+      def initialize(tag_name:, attributes: {}, children: [])
+        @tag_name = tag_name
+        @attributes = attributes
+
+        super(children: children)
+      end
+    end
+  end
+end
diff --git a/lib/window_browser/node_types/text.rb b/lib/window_browser/node_types/text.rb
new file mode 100644
index 0000000..87d7412
--- /dev/null
+++ b/lib/window_browser/node_types/text.rb
@@ -0,0 +1,15 @@
+require_relative '../node'
+
+module WindowBrowser
+  module NodeTypes
+    class Text < Node
+      attr_accessor :string
+
+      def initialize(string:, children: [])
+        @string = string
+
+        super(children: children)
+      end
+    end
+  end
+end