feat: implement dynamic training course tab system and modular PDF data migration scripts

sisvietnamvn_main/update_css_width.py

@@ -0,0 +1,16 @@
+import os
+
+with open('src/main/resources/static/css/custom.css', 'r') as f:
+    css = f.read()
+
+# Replace max-width: fit-content with max-width: 100% or remove it
+css = css.replace("max-width: fit-content;", "max-width: 860px;") 
+# 860px is the width in their snippet, but 100% is better.
+# In their snippet they have a parent <div class="flex justify-center ..."><div class="... w-full ...">
+# But the parent's width might not be constrained. 
+# Let's change max-width: fit-content to width: 100% and max-width: 860px;
+css = css.replace("max-width: fit-content;", "max-width: 860px;")
+
+with open('src/main/resources/static/css/custom.css', 'w') as f:
+    f.write(css)
+print("Updated custom.css for full width")