15  HTML/CSS

• W3 Schools | HTML Color Names
• Hexadecimal color code for transparency
• W3 Schools | CSS Buttons
• Tutorial Republic | How to Set Table Cellpadding and Cellspacing Using CSS
• Stack Overflow | How to align the table cells content on the top?
• Stack Overflow | HTML: how to make 2 tables with different CSS
• DataTables | Default styling options
• Setting width/height as percentage minus pixels - Stack Overflow