diff --git a/src/components/charts/panel.scss b/src/components/charts/panel.scss
index 974f9a0e..f8e62092 100644
--- a/src/components/charts/panel.scss
+++ b/src/components/charts/panel.scss
@@ -1,6 +1,6 @@
 .cn-panel {
   display: grid;
-  grid-template-columns: repeat(30, 2.90%);
+  grid-template-columns: repeat(30, 1fr);
   grid-auto-flow: row;
   grid-auto-rows: var(--chart-height-unit);
   grid-gap: 10px;