diff --git a/client/css/post-upload.styl b/client/css/post-upload.styl
index aa9fd960..243dc62f 100644
--- a/client/css/post-upload.styl
+++ b/client/css/post-upload.styl
@@ -74,6 +74,10 @@ $cancel-button-color = tomato
                 .thumbnail
                     width: 100%
                     height: 100%
+                    video
+                        opacity: 1
+                    img, video
+                        object-fit: contain
 
             .uploadable
                 border: 1px solid $upload-border-color