feat: Added underline + example

Author: lamATnginx

assets/css/v2/style.css

@@ -1018,6 +1018,8 @@ button:has(~ .product-selector[style*="none"]) > .product-selector-button-icon {
 details summary {
   color: oklch(var(--color-brand));
   transition: text-decoration-color 0.15s ease-in-out;
+  text-decoration: underline;
+  text-decoration-color: oklch(var(--color-brand) / 0.3);
 
   & ~ * {
     margin-top: 1rem;

exampleSite/content/test-product/everything.md

@@ -64,3 +64,9 @@ This won't render anything.
 
 {{< see-also >}}See also!{{< /see-also >}}
 
+
+## details
+<details open>
+    <summary style="font-weight:bold;">Learn how to pin NGINX Plus to a specific version</summary>
+    And this is the content on how to do so.
+</details>