diff --git a/content/docs/infrastructure/_index.md b/content/docs/infrastructure/_index.md
index 3123fb6..7045fcd 100644
--- a/content/docs/infrastructure/_index.md
+++ b/content/docs/infrastructure/_index.md
@@ -12,7 +12,7 @@ enables running additional services by myself, too.
 {{< cards >}}
   {{< card link="eturnal/" title="eturnal"
       image="eturnal/img/stun-turn-server.svg"
-      imageStyle="aspect-ratio: 16/9; object-fit:contain;"
+      imageStyle="aspect-ratio: 16/9; background: #fff; object-fit:contain;"
       subtitle="Supporting VoIP/Video calls with eturnal" >}}
   {{< card link="forgejo/" title="Forgejo"
       image="forgejo/img/forgejo-wordmark.svg"
@@ -28,7 +28,7 @@ enables running additional services by myself, too.
       subtitle="Live streaming media using Icecast" >}}
   {{< card link="matrix/" title="Matrix"
       image="matrix/img/matrix-logo.svg"
-      imageStyle="aspect-ratio: 16/9; object-fit:contain;"
+      imageStyle="aspect-ratio: 16/9; background: #fff; object-fit:contain;"
       subtitle="Building a community using Matrix" >}}
   {{< card link="nextcloud/" title="Nextcloud"
       image="nextcloud/img/nextcloud-logo-blue.svg"