Make workflows compatible with the dark theme

This CL also contains a minor fix for the workflows menu.

Fixed: twpowertools:146
Change-Id: I754e2695b3ee0f952b8f1c2f05af0533a715684c
diff --git a/src/contentScripts/communityConsole/workflows/components/TwptWorkflowProgress.js b/src/contentScripts/communityConsole/workflows/components/TwptWorkflowProgress.js
index 52245e0..54e8c63 100644
--- a/src/contentScripts/communityConsole/workflows/components/TwptWorkflowProgress.js
+++ b/src/contentScripts/communityConsole/workflows/components/TwptWorkflowProgress.js
@@ -7,6 +7,8 @@
 import {css, html, LitElement} from 'lit';
 import {map} from 'lit/directives/map.js';
 
+import {SHARED_MD3_STYLES} from '../../../../common/styles/md3.js';
+
 export default class TwptWorkflowProgress extends LitElement {
   static properties = {
     workflow: {type: Object},
@@ -16,13 +18,16 @@
     status: {type: String},
   };
 
-  static styles = css`
-    .progressbar-container {
-      display: flex;
-      flex-direction: column;
-      align-items: center;
-    }
-  `;
+  static styles = [
+    SHARED_MD3_STYLES,
+    css`
+      .progressbar-container {
+        display: flex;
+        flex-direction: column;
+        align-items: center;
+      }
+    `,
+  ];
 
   renderThreadProgress() {
     // @TODO: Improve this UI when the actions section is complete