diff --git a/app/static/css/minitimeline.css b/app/static/css/minitimeline.css
index 73bf6487d..05b3e7bd7 100644
--- a/app/static/css/minitimeline.css
+++ b/app/static/css/minitimeline.css
@@ -171,6 +171,9 @@
     justify-content: flex-start;
     align-items: center;
     flex-direction: column;
+    box-sizing: border-box;
+    border-left: 1px solid rgb(144, 144, 144);
+    border-right: 1px solid rgb(144, 144, 144);
 }
 
 .mini-timeline-block {