Flatten threads: improve quote styles

The author component has been made smaller.

Bug: twpowertools:153, twpowertools:156

Change-Id: I34649c4ec572c3f069b96d64a77c761446e9b267
diff --git a/src/contentScripts/communityConsole/flattenThreads/components/index.js b/src/contentScripts/communityConsole/flattenThreads/components/index.js
index 13b4dba..bf532fb 100644
--- a/src/contentScripts/communityConsole/flattenThreads/components/index.js
+++ b/src/contentScripts/communityConsole/flattenThreads/components/index.js
@@ -78,7 +78,7 @@
 
     @media (hover: hover) {
       @supports selector(:has(div)) {
-        .quote-container:not(:hover) .buttons-row:not(:has(md-tonal-button:focus)) {
+        .quote-container:not(:hover) .buttons-row:not(:focus-within) {
           opacity: 0;
         }
       }