diff --git a/macros/src/config.rs b/macros/src/config.rs
index c01ca9b..adc139f 100644
--- a/macros/src/config.rs
+++ b/macros/src/config.rs
@@ -46,7 +46,7 @@ pub fn global_attrs(span: Span) -> StringyMap<Ident, TokenStream> {
         insert("aria_modal", "crate::types::Bool");
         insert("aria_multiline", "crate::types::Bool");
         insert("aria_multiselectable", "crate::types::Bool");
-        insert("aria_orientation", "String"); // TODO Only supports some values https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-orientation
+        insert("aria_orientation", "crate::types::AriaOrientation");
         insert("aria_placeholder", "String");
         insert("aria_pressed", "crate::types::Bool");
         insert("aria_readonly", "crate::types::Bool");
diff --git a/macros/src/html.rs b/macros/src/html.rs
index 4fd914c..dc1034e 100644
--- a/macros/src/html.rs
+++ b/macros/src/html.rs
@@ -76,7 +76,10 @@ fn extract_data_attrs(attrs: &mut StringyMap<Ident, TokenTree>) -> StringyMap<St
         let key_name = key.to_string();
         if let Some(key_name) = key_name.strip_prefix("data_") {
             let value = attrs.remove(&key).unwrap();
-            data.insert(key_name.to_string(), value);
+            // makes sure if a data attribute has more than one hyphen
+            // they all get transformed
+            let key = str::replace(key_name, "_", "-");
+            data.insert(key.to_string(), value);
         }
     }
     data
diff --git a/typed-html/src/elements.rs b/typed-html/src/elements.rs
index 5312da1..ef3c029 100644
--- a/typed-html/src/elements.rs
+++ b/typed-html/src/elements.rs
@@ -31,6 +31,7 @@ macro_rules! marker_trait {
     };
 }
 
+marker_trait!(HTMLContent);
 marker_trait!(MetadataContent);
 marker_trait!(FlowContent);
 marker_trait!(SectioningContent);
@@ -53,7 +54,7 @@ marker_trait!(TableColumnContent);
 declare_elements! {
     html {
         xmlns: Uri,
-    } with [head, body];
+    } with [head, body] HTMLContent;
     head with [title] MetadataContent;
     body with FlowContent;
 
@@ -311,7 +312,7 @@ declare_elements! {
         src: Uri,
         text: String,
         type: String, // TODO could be an enum
-    } in [MetadataContent, FlowContent, PhrasingContent, TableColumnContent] with TextNode;
+    } in [MetadataContent, FlowContent, PhrasingContent, TableColumnContent, HTMLContent] with TextNode;
     section in [FlowContent, SectioningContent] with FlowContent;
     select {
         autocomplete: String,
diff --git a/typed-html/src/types/mod.rs b/typed-html/src/types/mod.rs
index 1652537..8a5c00c 100644
--- a/typed-html/src/types/mod.rs
+++ b/typed-html/src/types/mod.rs
@@ -549,3 +549,11 @@ pub enum AriaSort {
     #[strum(to_string = "other")]
     Other,
 }
+
+#[derive(EnumString, Display, PartialEq, Eq, PartialOrd, Ord, AsRefStr, IntoStaticStr)]
+pub enum AriaOrientation {
+    #[strum(to_string = "horizontal")]
+    Horizontal,
+    #[strum(to_string = "vertical")]
+    Vertical,
+}