diff --git a/src/xterm.css b/src/xterm.css
index e46f02d..8295eb6 100644
--- a/src/xterm.css
+++ b/src/xterm.css
@@ -98,6 +98,7 @@
     display: none;
     position: absolute;
     white-space: nowrap;
+    z-index: 1;
 }
 
 .terminal .composition-view.active {