diff --git a/frontend/src/main.less b/frontend/src/main.less
index aad7a081216701a9ac816ba8a4337a757c5529e9..966bf21fdf405d3ba15668e8397d989ad43d8a92 100644
--- a/frontend/src/main.less
+++ b/frontend/src/main.less
@@ -263,6 +263,7 @@ main {
 			& > img {
 				border: @option_border solid var(--bg);
 				border-radius: 2 * @option_border;
+				object-fit: contain;
 			}
 		}