diff --git a/app/assets/stylesheets/participation.scss b/app/assets/stylesheets/participation.scss
index 0779a367a..5469f2658 100644
--- a/app/assets/stylesheets/participation.scss
+++ b/app/assets/stylesheets/participation.scss
@@ -1695,9 +1695,10 @@
 
     img {
       height: $line-height * 9;
+      min-width: 100%;
+      max-width: none;
       transition-duration: 0.3s;
       transition-property: transform;
-      width: 100%;
     }
 
     &:hover {