More specific <input type="text"> CSS.

Fixes odd Log Out button styling

app/static/styles.css

@@ -123,7 +123,7 @@ input, textarea {
   font-family: 'Barlow', sans-serif;
 }
 
-body.dark-mode input {
+body.dark-mode input[type="text"] {
   color: #eee;
   background-color: #000;
   border: none;