Update ISSUE_TEMPLATE.md

.github/ISSUE_TEMPLATE.md

@@ -1,4 +1,18 @@
 <!-- Attach a screenshot where applicable -->
-## Expected Behavior
+### Expected Behavior
+
+### Actual Behavior
+
+<details>
+  <summary>Browser: </summary>
+  <!-- Enter your Browser information here -->
+</details>
+
+
+<!--
+Is your issue for a new theme or language? As of Carbon `3.0.0`, the core Carbon team is no 
+longer implementing new themes or languages ourselves, but we are happy to accept PRs to add new ones.
+
+Please see https://github.com/dawnlabs/carbon#a-note-on-adding-themeslanguages for notes on how to do so 😄 
+-->
 
-## Actual Behavior