feat: removed wrapper <div> inside root

There's just one left now!

examples/demos/full_page_layout/static/style.css

@@ -6,15 +6,15 @@
 /* This makes all the elements that wrap our code take up the whole page, so that we can put things at the bottom.
  * Without this, the footer would be just beneath the content if the content doesn't fill the whole page (try disabling this).
  *
- * Quirk: we have to deal with the wrapper around `#root` created by `PerseusRoot` as well as the wrapper inside it (both will be gone by v0.4.0 stabilization)
+ * Quirk: we have to deal with the wrapper around `#root` created by `PerseusRoot`
 */
-html, body, body > div, #root, #root > div {
+html, body, body > div, #root {
     height: 100%;
 }
 /* This makes the `<div>` that wraps our whole app use CSS Grid to display three sections: the header, content, and footer.
  * Quirk: soon, this will just be `#root`
 */
-#root > div {
+#root {
     display: grid;
     grid-template-columns: 1fr;
     /* The header will be automatically sized, the footer will be as small as possible, and the content will take up the rest of the space in the middle */

packages/perseus/src/router/router_component.rs

@@ -391,10 +391,7 @@ pub(crate) fn perseus_router(
                 // The main reason for this is that the router only intercepts click events from its children
 
                 view! { cx,
-                        // BUG (Sycamore): We can't remove this `div` yet...
-                        div {
-                            (*curr_view.get())
-                        }
+                        (*curr_view.get())
                 }
             }
         )

packages/perseus/src/server/html_shell.rs

@@ -329,7 +329,7 @@ impl fmt::Display for HtmlShell {
         let html_replacement = format!(
             // We give the content a specific ID so that it can be deleted if an error page needs
             // to be rendered on the client-side
-            "{}<div>{}</div>",
+            "{}{}",
             &html_to_replace_double, self.content,
         );
         // Now interpolate that HTML into the HTML shell