add vietnamese fonts

Author: hmthanh

app/globals.css

@@ -16,7 +16,8 @@
 @import "../styles/hamburger.css";
 @import "../styles/typesetting-article.css";
 
-/* @import "../styles/i81n/chinese.css"; */
+@import "../styles/i81n/chinese.css";
+@import "../styles/i81n/vietnamese.css";
 
 @custom-variant dark (&:where(.dark, .dark *));
 @custom-variant light (&:where(.light, .light *));
@@ -71,6 +72,7 @@
 
     font-family:
       SurveyWithCode,
+      SurveyWithCodeVietnamese,
       SurveyWithCodeChina,
       Katex_Main,
       "Segoe UI",

public/fonts/vietnamese/SurveyWithCodeVietnamese-Bold Extended Italic.woff2

@@ -0,0 +1,41 @@
+@font-face {
+  font-family: "SurveyWithCodeVietnamese";
+  src: url("/fonts/vietnamese/SurveyWithCodeVietnamese-Regular.woff2") format("woff2");
+  font-weight: 400;
+  font-style: normal;
+}
+
+@font-face {
+  font-family: "SurveyWithCodeVietnamese";
+  src: url("/fonts/vietnamese/SurveyWithCodeVietnamese-Italic.woff2") format("woff2");
+  font-weight: 400;
+  font-style: italic;
+}
+
+@font-face {
+  font-family: "SurveyWithCodeVietnamese";
+  src: url("/fonts/vietnamese/SurveyWithCodeVietnamese-Slanted.woff2") format("woff2");
+  font-weight: 400;
+  font-style: oblique;
+}
+
+@font-face {
+  font-family: "SurveyWithCodeVietnamese";
+  src: url("/fonts/vietnamese/SurveyWithCodeVietnamese-Bold Extended.woff2") format("woff2");
+  font-weight: 700;
+  font-style: normal;
+}
+
+@font-face {
+  font-family: "SurveyWithCodeVietnamese";
+  src: url("/fonts/vietnamese/SurveyWithCodeVietnamese-Bold Extended Italic.woff2") format("woff2");
+  font-weight: 700;
+  font-style: italic;
+}
+
+@font-face {
+  font-family: "SurveyWithCodeVietnamese";
+  src: url("/fonts/vietnamese/SurveyWithCodeVietnamese-Bold Extended Slanted.woff2") format("woff2");
+  font-weight: 700;
+  font-style: oblique;
+}