diff --git a/static/scss/custom.scss b/static/scss/custom.scss
index debb6c6..d013a78 100644
--- a/static/scss/custom.scss
+++ b/static/scss/custom.scss
@@ -301,6 +301,8 @@ $homepage-block-min-height: 480px;
 }
 
 .sponsor-list a img {
+  width: 100%;
+  max-width: 300px;
 }
 
 .sponsor-list {