A well-designed website should be usable for everyone. Here are five common accessibility issues to check: 

1. Color contrast
   Light grey text on a white background may look clean, but is hard to read for many users. Always use clear contrast, such as dark text on a light background. 
   
   
2. Inaccessible PDFs
   PDFs can be difficult to read if they are missing tags, image descriptions, or a clear reading order. Consider providing accessible PDFs with proper tagging and descriptions, or a similar webpage (HTML version) for easier access. 
   
   
3. Images without descriptions
   A photo of a campus event without alt text leaves some users with no context. Add simple descriptions like “Students attending CUHK workshop”.
   
   
4. Unclear headings and structure
   A long page with bold text instead of proper headings makes it hard to scan. Use clear section titles (e.g.“Overview”, “Steps”). 
   
   
5. Missing form labels
   A form with blank input boxes can confuse users. Always label fields clearly (e.g.“Email address”). 

For official guidelines in Hong Kong, refer to the: Web Accessibility Handbook by the Digital Policy Office.