diff --git a/app/assets/stylesheets/participation.scss b/app/assets/stylesheets/participation.scss
index b4ee47a83..4bc64f9a5 100644
--- a/app/assets/stylesheets/participation.scss
+++ b/app/assets/stylesheets/participation.scss
@@ -1690,9 +1690,10 @@
     display: block;
 
     img {
-      max-height: $line-height * 13;
+      height: $line-height * 9;
       transition-duration: 0.3s;
       transition-property: transform;
+      width: 100%;
     }
 
     &:hover {