diff --git a/styles/common-style.css b/styles/common-style.css
index 3ed0664..41dde40 100644
--- a/styles/common-style.css
+++ b/styles/common-style.css
@@ -67,6 +67,13 @@ a {
     font-size: 25px;
     box-sizing: border-box;
 	box-shadow: 10px 10px 10px 0 rgba(0, 0, 0, 0.2);
+	
+	/* Disable text highlighting */
+	-moz-user-select: none;
+	-webkis-user-select: none;
+	-ms-user-select: none;
+	user-select: none;
+	-o-user-select: none;
 
     /* Size */
     width: 600px;