feat: use Casbin logo icon in navbar (#397)

Author: hsluoyz

docusaurus.config.js

@@ -34,10 +34,10 @@ module.exports = {
       respectPrefersColorScheme: true,
     },
     navbar: {
-      title: "Casbin",
+      title: "",
       logo: {
-        alt: "My Site Logo",
-        src: "img/casbin.svg",
+        alt: "Casbin Logo",
+        src: "https://cdn.casbin.org/img/casbin_logo_1024x256.png",
       },
       hideOnScroll: true,
       items: [

src/css/custom.css

@@ -175,6 +175,12 @@ div[class^="announcementBar_"] {
   margin-top: 1rem;
 }
 
+/* navbar logo */
+.navbar__logo {
+  height: 2rem;
+  max-width: 8rem;
+}
+
 /* navbar items */
 .navbar__item {
   font-size: 14px;