diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index 9d40511..6ae2551 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -35,6 +35,12 @@ jobs:
           git checkout FETCH_HEAD
       - run: rustup component add rustfmt
       - run: cargo fmt --check
+      - name: Install dx CLI
+        run: |
+          curl -L --proto '=https' --tlsv1.2 -sSf https://raw.githubusercontent.com/cargo-bins/cargo-binstall/main/install-from-binstall-release.sh | bash
+          cargo binstall dioxus-cli@0.7.3 -y --force
+      - name: RSX format check
+        run: dx fmt --check
 
   clippy:
     name: Clippy
diff --git a/build.rs b/build.rs
index 4cfbc39..521a6cb 100644
--- a/build.rs
+++ b/build.rs
@@ -1,8 +1,9 @@
-#[allow(clippy::expect_used)]
 fn main() -> Result<(), Box<dyn std::error::Error>> {
     use std::process::Command;
     println!("cargo:rerun-if-changed=./styles/input.css");
-    Command::new("bunx")
+
+    // Tailwind build is optional - skip gracefully in CI or environments without bun
+    match Command::new("bunx")
         .args([
             "@tailwindcss/cli",
             "-i",
@@ -11,7 +12,15 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
             "./assets/tailwind.css",
         ])
         .status()
-        .expect("could not run tailwind");
+    {
+        Ok(status) if !status.success() => {
+            println!("cargo:warning=tailwind build exited with {status}, skipping CSS generation");
+        }
+        Err(e) => {
+            println!("cargo:warning=bunx not found ({e}), skipping tailwind CSS generation");
+        }
+        Ok(_) => {}
+    }
 
     Ok(())
 }