use simple styling

src/css_handler.rs

@@ -0,0 +1,12 @@
+use axum::http::StatusCode;
+use axum::{http::Response, response::IntoResponse};
+
+static STYLESHEET: &str = include_str!("../static/styles.css");
+
+pub async fn stylesheet_handler() -> Result<impl IntoResponse, StatusCode> {
+    let response = Response::builder()
+        .header("Content-Type", "text/css")
+        .body(STYLESHEET.to_string());
+
+    response.map_err(|_| StatusCode::INTERNAL_SERVER_ERROR)
+}