Style Sheets How to add a style sheet to an HTML page. Inheritance Cascading styles. Class and ID CSS selectors (single and multiple). Attribute selectors Target HTML elements based on a specific attribute. Specificity Which rules take precedence in CSS. The CSS Box Model Borders, Padding and Margins. Pseudo classes Format Anchor links and Drop Caps. Vendor prefixes Early support for new CSS properties. CSS Units px pt em cm mm etc. Naming convention Some suggested coding standards.