Update more examples, add css for more examples

examples/svg.rs

@@ -1,4 +1,10 @@
-// Thanks to @japsu and their project https://github.com/japsu/jatsi for the example!
+//! Thanks to @japsu and their project https://github.com/japsu/jatsi for the example!
+//!
+//! This example shows how to create a simple dice rolling app using SVG and Dioxus.
+//! The `svg` element and its children have a custom namespace, and are attached using different methods than regular
+//! HTML elements. Any element can specify a custom namespace by using the `namespace` meta attribute.
+//!
+//! If you `go-to-definition` on the `svg` element, you'll see its custom namespace.
 
 use dioxus::prelude::*;
 use rand::{thread_rng, Rng};