Finished ross content, added skill matrix, li, and ul, and improved many existing components, created and refactored to unified layouts and grid, visual improvements with proper column to row collapsing

src/components/PageGroup.astro

@@ -0,0 +1,21 @@
+---
+const hasHeader = Astro.slots.has("header");
+const hasDefault = Astro.slots.has("default");
+---
+
+<div class="grid grid-cols-1 gap-3">
+  {
+    Astro.slots.has("header") && (
+      <div>
+        <slot name="header" />
+      </div>
+    )
+  }
+  {
+    Astro.slots.has("default") && (
+      <div class="grid grid-cols-1 gap-3">
+        <slot />
+      </div>
+    )
+  }
+</div>