set automatically dark mode

layouts/index.html

@@ -167,6 +167,11 @@
       $(".education-backdark").toggleClass("education-back");
       $(".achievements-backdark").toggleClass("achievements-back");
     }
+
+    let darkmode = window.matchMedia('(prefers-color-scheme: dark)').matches;
+    if (darkmode) {
+      $(".darkmode-label").click();
+    }
   </script>
 </body>
 {{ else }}