diff --git a/src/DisplayTypes/DisplayBlock.php b/src/DisplayTypes/DisplayBlock.php
new file mode 100644
index 0000000..0644716
--- /dev/null
+++ b/src/DisplayTypes/DisplayBlock.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace ByJoby\HTML\DisplayTypes;
+
+interface DisplayBlock
+{
+}
diff --git a/src/DisplayTypes/DisplayContents.php b/src/DisplayTypes/DisplayContents.php
new file mode 100644
index 0000000..eac3f14
--- /dev/null
+++ b/src/DisplayTypes/DisplayContents.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace ByJoby\HTML\DisplayTypes;
+
+interface DisplayContents
+{
+}
diff --git a/src/DisplayTypes/DisplayInline.php b/src/DisplayTypes/DisplayInline.php
new file mode 100644
index 0000000..d541150
--- /dev/null
+++ b/src/DisplayTypes/DisplayInline.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace ByJoby\HTML\DisplayTypes;
+
+interface DisplayInline
+{
+}
diff --git a/src/DisplayTypes/DisplayInlineBlock.php b/src/DisplayTypes/DisplayInlineBlock.php
new file mode 100644
index 0000000..a7a6380
--- /dev/null
+++ b/src/DisplayTypes/DisplayInlineBlock.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace ByJoby\HTML\DisplayTypes;
+
+interface DisplayInlineBlock
+{
+}
diff --git a/src/DisplayTypes/DisplayNone.php b/src/DisplayTypes/DisplayNone.php
new file mode 100644
index 0000000..fbbcc7e
--- /dev/null
+++ b/src/DisplayTypes/DisplayNone.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace ByJoby\HTML\DisplayTypes;
+
+interface DisplayNone
+{
+}