diff --git a/src/features/online-board/components/OnlineBoardStartPage.scss b/src/features/online-board/components/OnlineBoardStartPage.scss
index e8db02ca..b0b8a96b 100644
--- a/src/features/online-board/components/OnlineBoardStartPage.scss
+++ b/src/features/online-board/components/OnlineBoardStartPage.scss
@@ -25,7 +25,10 @@
         padding-right: 50px;
         padding-left: 65px;
         background-repeat: no-repeat;
-        background-position: 0px center;
+        // Angular uses `background-position: left center` (not `0px center`)
+        // so the SVGs align with the left padding consistently across
+        // browsers that treat `left` and `0%` slightly differently.
+        background-position: left center;
         background-size: 45px 45px;
 
         a {