diff --git a/src/_h5ai/client/css/inc/view.less b/src/_h5ai/client/css/inc/view.less
index 14103a72..f835abbc 100644
--- a/src/_h5ai/client/css/inc/view.less
+++ b/src/_h5ai/client/css/inc/view.less
@@ -128,6 +128,7 @@
 
 				&.thumb {
 					box-shadow: 0 0 0 1px #ddd;
+					vertical-align: top;
 				}
 			}