added login requirement to view articles to protect against potential data scrapping, with redirect functionality to the article the user attempts to view prior to login.

css/base.css

@@ -305,7 +305,7 @@ i {
   transition-duration: 500ms;
 }
 
-#theme-toggle {
+#theme_toggle {
   background: none;
   border: none;
 }

css/dark.css

@@ -63,7 +63,7 @@ table tr {
   color: white;
 }
 
-#theme-toggle {
+#theme_toggle {
   color: white;
 }
 

css/light.css

@@ -63,7 +63,7 @@ table tr {
   color: black;
 }
 
-#theme-toggle {
+#theme_toggle {
   color: black;
 }