From 417e439a380424ddabf22937e69bd2c8876d8fec Mon Sep 17 00:00:00 2001
From: Paul Kaplan <pkaplan@media.mit.edu>
Date: Tue, 19 Jun 2018 12:06:45 -0400
Subject: [PATCH] Make white thumbnails have  transparent backgrounds

---
 src/components/backpack/backpack.css | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/components/backpack/backpack.css b/src/components/backpack/backpack.css
index db8b9cd05..229344a2d 100644
--- a/src/components/backpack/backpack.css
+++ b/src/components/backpack/backpack.css
@@ -52,4 +52,5 @@
 .backpack-item {
     min-width: 4rem;
     margin: 0 0.25rem;
+    mix-blend-mode: multiply; /* Make white transparent for thumnbnails */
 }