diff --git a/cps/static/css/style.css b/cps/static/css/style.css
index aaa549ce..0bab5b53 100644
--- a/cps/static/css/style.css
+++ b/cps/static/css/style.css
@@ -172,7 +172,7 @@ table .bg-dark-danger a { color: #fff; }
 
 .container-fluid .book .cover span .img {
   bottom: 0;
-  width: 100%;
+  height: 100%;
   position: absolute;
 }