diff --git a/src/css/charts.scss b/src/css/charts.scss
index aaad096..3018106 100644
--- a/src/css/charts.scss
+++ b/src/css/charts.scss
@@ -143,5 +143,12 @@
 			margin-right: 8px;
 			border-radius: 2px;
 		}
+
+		.tooltip-label {
+			max-width: 100px;
+			overflow: hidden;
+			text-overflow: ellipsis;
+			white-space: nowrap;
+		}
 	}
 }