diff --git a/asset/css/vendor/billboard-modify.less b/asset/css/vendor/billboard-modify.less
new file mode 100644
index 00000000..59f90002
--- /dev/null
+++ b/asset/css/vendor/billboard-modify.less
@@ -0,0 +1,10 @@
+text.bb-title {
+    font-size: 2em;
+}
+
+.bb-grid .threshold-mark {
+    line {
+        stroke: rgba(0, 0, 0, 0.2);
+        stroke-dasharray: 5;
+    }
+}