Update astro.config.mjs

src/config/astro.config.mjs

@@ -6,6 +6,11 @@ export default defineConfig({
     // Example: Generate `page.html` instead of `page/index.html` during build.
     format: 'file'
   },
+  markdown: {
+    shikiConfig: {
+      theme: 'dark-plus'
+    }
+  },
   // base: './dist',
   srcDir: './src/html',
   outDir: './dist/pages'