diff --git a/.gitignore b/.gitignore
index 83190c7..5a9d365 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,6 +4,7 @@
 *.html
 *.xml
 *.gmi.txt
+org.css
 !index.html
 !xmr.html
 !404.html
diff --git a/css/everforest.css b/css/everforest.css
index 33c52d5..2e995cc 100644
--- a/css/everforest.css
+++ b/css/everforest.css
@@ -1,3 +1,7 @@
+/*
+ * extracted from index.html
+ * modified according to https://theoryware.net
+ */
 body{background-color:#2f383e;color:#d3c6aa;font-family:Monaco,Lucida Console,courier new,monospace;font-size:18px;margin:0 auto;max-width:64em}
 a{color:#7fbbb3;text-decoration:none}
 a:visited{color:#a7c080}
diff --git a/css/org.small.css b/css/org.small.css
new file mode 100644
index 0000000..ccef359
--- /dev/null
+++ b/css/org.small.css
@@ -0,0 +1,98 @@
+/* generic code */
+.org-variable-name {
+    /* font-lock-variable-name-face */
+    color: #3a94c5;
+}
+.org-preprocessor {
+    /* font-lock-preprocessor-face */
+    color: #f85552;
+}
+.org-keyword {
+    /* font-lock-keyword-face */
+    color: #f85552;
+}
+.org-string {
+    /* font-lock-string-face */
+    color: #8da101;
+}
+.org-type {
+    /* font-lock-type-face */
+    color: #8da101;
+}
+.org-builtin, .org-elixir-atom {
+    /* font-lock-builtin-face */
+    color: #35a77c;
+}
+.org-comment, .org-comment-delimiter, .org-doc {
+    /* font-lock-comment-face */
+    color: #829181;
+    font-style: italic;
+}
+
+/* diff */
+.org-diff-added {
+    /* diff-added */
+    background-color: #eeffee;
+}
+.org-diff-file-header {
+    /* diff-file-header */
+    background-color: #bfbfbf;
+    font-weight: bold;
+}
+.org-diff-function {
+    /* diff-function */
+    background-color: #d9d9d9;
+}
+.org-diff-header {
+    /* diff-header */
+    background-color: #d9d9d9;
+}
+.org-diff-hunk-header {
+    /* diff-hunk-header */
+    background-color: #d9d9d9;
+}
+.org-diff-index {
+    /* diff-index */
+    background-color: #bfbfbf;
+    font-weight: bold;
+}
+.org-diff-indicator-added {
+    /* diff-indicator-added */
+    color: #22aa22;
+    background-color: #eeffee;
+}
+.org-diff-indicator-changed {
+    /* diff-indicator-changed */
+    color: #aaaa22;
+}
+.org-diff-indicator-removed {
+    /* diff-indicator-removed */
+    color: #aa2222;
+    background-color: #ffeeee;
+}
+.org-diff-refine-added {
+    /* diff-refine-added */
+    background-color: #bbffbb;
+}
+.org-diff-refine-changed {
+    /* diff-refine-changed */
+    background-color: #ffff55;
+}
+.org-diff-refine-removed {
+    /* diff-refine-removed */
+    background-color: #ffcccc;
+}
+.org-diff-removed {
+    /* diff-removed */
+    background-color: #ffeeee;
+}
+
+/* sh */
+.org-sh-escaped-newline, .org-sh-heredoc {
+    /* sh-escaped-newline */
+    color: #8da101;
+}
+.org-sh-quoted-exec {
+    /* sh-quoted-exec */
+    color: #ff00ff;
+}
diff --git a/org/mailinglist.org b/org/mailinglist.org
index b6ea3df..afa8853 100644
--- a/org/mailinglist.org
+++ b/org/mailinglist.org
@@ -104,6 +104,7 @@ to 并 cc 是对的, 这样如果这是一个有很多回复的 thread, 不会
 :CUSTOM_ID: mailru
 :END:
 换 OpenMbox.net 了, 希望是最后一次换邮件服务商
+(2023.5) 好吧... 也被墙了
 ** [[https://www.mail-archive.com/misc@openbsd.org/msg184084.html][Live stick / cd from official sources]]
 :PROPERTIES:
 :CUSTOM_ID: livecd
diff --git a/org/publish_config.el b/org/publish_config.el
index af4cc77..a1395ee 100644
--- a/org/publish_config.el
+++ b/org/publish_config.el
@@ -1,9 +1,3 @@
-;; this file and Makefile from:
-;; https://www.cnblogs.com/banjia/archive/2012/09/29/2708966.html
-;; CSDN, 阿里云, 这些垃圾都在未授权盗搬, 结果这个东西有些地方都过时了. 能不能有点创新...
-
-;; System Crafter's video: https://youtu.be/AfkrzFodoNw
-
 (require 'package)
 (package-initialize)
 (when (not package-archive-contents)
@@ -50,8 +44,7 @@
          :publishing-function org-html-publish-to-html
          :preserve-breaks t
 
-         :org-html-validation-link nil
-         :html-head "<link rel='stylesheet' href='css/main.css' />"
+         :html-head "<link rel='stylesheet' href='css/main.css' /><link rel='stylesheet' href='css/org.small.css' />"
          ;; :html-head-include-default-style nil
          :html-link-home "https://dongdigua.github.io"
          :html-link-up "./../posts"
diff --git a/org/whatif_openbsd.org b/org/whatif_openbsd.org
index c8704cf..61d35e2 100644
--- a/org/whatif_openbsd.org
+++ b/org/whatif_openbsd.org
@@ -110,7 +110,7 @@ grub> boot
 然后就是安装一堆软件
 我没有安装那些 "现代化 UNIX 工具", 比如 htop bat exa zoxide, (ripgrep 除外, 太好用了)
 7z 真的好用, 但是我觉得更应该学学标准的 UNIX 压缩解压工具
-#+BEGIN_SRC ksh
+#+BEGIN_SRC shell
 doas pkg_add firefox neovim git pcmanfm noto-cjk # 特别必要的
 doas pkg_add ripgrep fzf ncdu neofetch ranger p7zip colortree # 好用的工具
 doas pkg_add gmake elixir gnutls # dev