diff --git a/style.css b/style.css
index 87a83a5..37efe76 100644
--- a/style.css
+++ b/style.css
@@ -635,3 +635,7 @@ button > * {
     border-top-left-radius: 0;
     margin-bottom: -2px;
 }
+
+#treeTab td button {
+    margin: 0 10px 0 10px;
+}
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