diff --git a/share/all.css b/share/all.css
index 7bf8eba..7a4a191 100644
--- a/share/all.css
+++ b/share/all.css
@@ -19,6 +19,7 @@
 }
 #pdf-main .l {
   position:absolute;
+  height:0;
   white-space:pre;
   font-size:1px;
   transform-origin:0% 100%;