diff --git a/share/jupyter/nbconvert/templates/pale-sand-navy/static/index.css b/share/jupyter/nbconvert/templates/pale-sand-navy/static/index.css
index 87c4bae..2fb07d6 100644
--- a/share/jupyter/nbconvert/templates/pale-sand-navy/static/index.css
+++ b/share/jupyter/nbconvert/templates/pale-sand-navy/static/index.css
@@ -54,6 +54,7 @@ h1, h2 {
     vertical-align: top;
     text-align: right;
     padding-right: 10px;
+    user-select: none;
 }
 
 .code-cell .code-line {
@@ -120,4 +121,4 @@ h1, h2 {
         width: calc(100% - 20px);
         margin: 20px 10px 0 10px;
     }
-}
\ No newline at end of file
+}