Update constants.py

constants.py

@@ -116,8 +116,8 @@ For more details on the individual datasets and how models are evaluated to give
 
 LEADERBOARD_CSS = """
 #leaderboard-table th .header-content {
-		white-space: normal;
-		overflow-wrap: break-word;
-		word-break: break-word;
+		white-space: nowrap;
+		overflow: hidden;
+		text-overflow: ellipsis;
 	}
 """