diff --git a/.changeset/chatty-timers-itch.md b/.changeset/chatty-timers-itch.md
new file mode 100644
index 0000000..053e85a
--- /dev/null
+++ b/.changeset/chatty-timers-itch.md
@@ -0,0 +1,5 @@
+---
+"@teiler/core": patch
+---
+
+Fix `css` helper function types
diff --git a/packages/core/src/constructor.ts b/packages/core/src/constructor.ts
index efdada6..bcd7f00 100644
--- a/packages/core/src/constructor.ts
+++ b/packages/core/src/constructor.ts
@@ -91,8 +91,9 @@ function keyframes(strings: ReadonlyArray<string>, ...properties: Raw[]): StyleD
   }
 }
 
-function css<Props>(strings: ReadonlyArray<string>, ...properties: Exclude<Properties<Props>, Expression<Props>>[]): CSS<Props> {
-  const style: Style<Props> = [Array.from(strings), properties]
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+function css(strings: ReadonlyArray<string>, ...properties: Exclude<Properties<any>, Expression<unknown>>[]): CSS<unknown> {
+  const style: Style<unknown> = [Array.from(strings), properties]
   const styles = [style]
   const id = styles.reduce((acc, [strings]) => acc + strings.join(''), '')
   return { styles: styles, id: 't' + hash(id), __css__: true }
diff --git a/packages/core/src/pattern.ts b/packages/core/src/pattern.ts
index 543e9b6..bbe473e 100644
--- a/packages/core/src/pattern.ts
+++ b/packages/core/src/pattern.ts
@@ -4,10 +4,8 @@ import type { HTMLElements } from './tags'
 import tags from './tags'
 import hash from './hash'
 
-type PropertiesWithPattern<Props> = Properties<Props> | Pattern<HTMLElements, Props>
-
-type Pattern<Target extends HTMLElements, Props = {}> = {
-  styles: Style<Props>[]
+type Pattern<Target extends HTMLElements, Props> = {
+  styles: Array<Style<Props>>,
   tag: Target
   id: string
   __pattern__: true
@@ -17,14 +15,14 @@ type ExtendCallback<Target extends HTMLElements, Props> = <Component>(string: Re
 
 type Constructor<Target extends HTMLElements> = {
   <Props = {}>(pattern: Pattern<Target, Props>): ExtendCallback<Target, Props>
-  <Props = {}>(string: ReadonlyArray<string>, ...properties: PropertiesWithPattern<Props>[]): Pattern<Target, Props>
+  <Props = {}>(string: ReadonlyArray<string>, ...properties: Properties<Props>[]): Pattern<Target, Props>
 }
 
 type Infer<Component, Props> = Component extends Pattern<HTMLElements, infer P> ? P & Props : Props
 
 const construct = <Target extends HTMLElements>(tag: Target) => {
   function create<Props = {}>(stringOrPattern: Pattern<Target, Props>): ExtendCallback<Target, Props>
-  function create<Props = {}>(stringOrPattern: ReadonlyArray<string>, ...properties: PropertiesWithPattern<Props>[]): Pattern<Target, Props>
+  function create<Props = {}>(stringOrPattern: ReadonlyArray<string>, ...properties: Properties<Props>[]): Pattern<Target, Props>
   function create<Props>(stringOrPattern: Pattern<Target, Props> | ReadonlyArray<string>, ...properties: Properties<Props>[]): Pattern<Target, Props> | ExtendCallback<Target, Props> {
     if ('__pattern__' in stringOrPattern) {
       return <Component>(strings: ReadonlyArray<string>, ...properties: Properties<Infer<Component, Props>>[]) => {