diff --git a/src/Html/Renderables/Container.php b/src/Html/Renderables/Container.php
new file mode 100644
index 0000000..9192afb
--- /dev/null
+++ b/src/Html/Renderables/Container.php
@@ -0,0 +1,47 @@
+Contents = $Contents;
+ }
+
+ /**
+ * @return Renderable[]
+ */
+ public function contents()
+ {
+ return $this->Contents;
+ }
+
+
+ /** @return string */
+ public function getHtml()
+ {
+ return \array_reduce(
+ $this->Contents,
+ /**
+ * @param string $html
+ * @param Renderable $Renderable
+ * @return string
+ */
+ function ($html, Renderable $Renderable) {
+ return $html . $Renderable->getHtml();
+ },
+ ''
+ );
+ }
+}
diff --git a/src/Html/Renderables/Invisible.php b/src/Html/Renderables/Invisible.php
new file mode 100644
index 0000000..8525e15
--- /dev/null
+++ b/src/Html/Renderables/Invisible.php
@@ -0,0 +1,20 @@
+html = $html;
+ }
+
+ /** @return string */
+ public function getHtml()
+ {
+ return $this->html;
+ }
+}