diff --git a/src/components/Layout/components/Sidebar/components/SidebarPositioner/sidebarPositioner.styles.ts b/src/components/Layout/components/Sidebar/components/SidebarPositioner/sidebarPositioner.styles.ts
index c9d82eee..86c0418c 100644
--- a/src/components/Layout/components/Sidebar/components/SidebarPositioner/sidebarPositioner.styles.ts
+++ b/src/components/Layout/components/Sidebar/components/SidebarPositioner/sidebarPositioner.styles.ts
@@ -6,6 +6,7 @@ interface Props {
 }
 
 export const SidebarPositioner = styled("div")<Props>`
+  box-sizing: border-box;
   height: 100%;
   overflow: visible;
   padding: 16px 0;