diff --git a/index.html b/index.html
index a155228..c3d134a 100644
--- a/index.html
+++ b/index.html
@@ -3,6 +3,7 @@
 <head>
 <meta charset="utf-8">
 <title>Conferences in Taiwan</title>
+<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.0.0/dist/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
 </head>
 <body>
 <article>
