diff --git a/contents/css/main.css b/contents/css/main.css
index d95cfeb..21d9591 100644
--- a/contents/css/main.css
+++ b/contents/css/main.css
@@ -7,6 +7,8 @@ body {
   font-family: 'Lora', serif;
   font-size: 21px;
   line-height: 1.52;
+  background: url('../img/smoke-bg.jpg') no-repeat center center fixed;
+  background-size: cover;
   background-color: #f8f8f8;
   text-rendering: optimizeLegibility;
 }
diff --git a/contents/img/smoke-bg.jpg b/contents/img/smoke-bg.jpg
new file mode 100644
index 0000000..3881df7
Binary files /dev/null and b/contents/img/smoke-bg.jpg differ