diff --git a/client/src/App.scss b/client/src/App.scss
index 5943d7c..6bdd5d1 100644
--- a/client/src/App.scss
+++ b/client/src/App.scss
@@ -15,6 +15,14 @@
     max-height: 100vh;
     font-size: 18px;
     font-family: Verdana, sans-serif;
+
+    // Block user-select in browser
+    -webkit-touch-callout: none;
+    -webkit-user-select: none;
+    -khtml-user-select: none;
+    -moz-user-select: none;
+    -ms-user-select: none;
+    user-select: none;
   }
 
   #root {