diff --git a/src/content/blog/dev_diary-tea-is-env++.md b/src/content/blog/dev_diary-tea-is-env++.md
index 653ff2a..96e4ad7 100644
--- a/src/content/blog/dev_diary-tea-is-env++.md
+++ b/src/content/blog/dev_diary-tea-is-env++.md
@@ -1,6 +1,7 @@
 ---
 title: "dev.diary—tea is env++"
 date: 2023-01-31
+categories: [dev.diaries, programming]
 draft: false
 featured_image: "/Images/blog/tea-is-env.jpg"
 ---
diff --git a/src/layouts/_default/single.html b/src/layouts/_default/single.html
index dd6faac..7d672f5 100644
--- a/src/layouts/_default/single.html
+++ b/src/layouts/_default/single.html
@@ -83,4 +83,16 @@
   display: inline-block;
   vertical-align: middle;
 }
+
+img{
+  max-width: 100%;
+}
+
+code{
+  color: #ff7ba7;
+}
+
+h1, h2, h3, h4, h5, h6{
+  text-transform: lowercase;
+}
 </style>