diff --git a/src/public/css/seca.css b/src/public/css/seca.css
index e9d1e8a..47b0801 100644
--- a/src/public/css/seca.css
+++ b/src/public/css/seca.css
@@ -1,5 +1,6 @@
 * {
   font-family: 'Courier New', Courier, monospace;
+  box-sizing: border-box;
 }
 
 .badge {