diff --git a/jekyll_theme/assets/css/code-highlighting.css b/jekyll_theme/assets/css/code-highlighting.css
index a571429..ff542d2 100644
--- a/jekyll_theme/assets/css/code-highlighting.css
+++ b/jekyll_theme/assets/css/code-highlighting.css
@@ -15,6 +15,6 @@ pre, code { font-family: JBMono, monospace; font-variant: none; }
 /* number */
 .mi, .mf { color: #3866ee; }
 /* string */
-.s, .s1, .s2, .dl { color: #080; }
+.s, .s1, .s2, .se, .dl { color: #080; }
 /* comment */
 .c, .c1, .cm { color: #9e9e9e; }