dynamic text and styling,

src/macros.rs

@@ -13,6 +13,18 @@ macro_rules! call {
 #[macro_export]
 macro_rules! launch {
     ($expr:expr) => {
-        while $crate::run(&mut $expr) {}
+        let mut element = $expr;
+        let mut document = $crate::Document::with_elem(&mut element);
+        while document.run() {
+            element = $expr;
+        }
+    };
+    ($expr:expr, $css:expr) => {
+        let mut element = $expr;
+        let mut document = $crate::Document::with_elem(&mut element);
+        document.set_css($css);
+        while document.run() {
+            element = $expr;
+        }
     };
 }