Web Essentials (HTML & CSS): How to code, test and validate: Part2

🎓 Describe the components of a CSS style rule. 🎓 Describe the use of these types of CSS selectors: type, id, and class. 🎓 Explain how and why you would start a new HTML or CSS file from a template. 🎓 Describe three ways to run a web page and one way to retest a page after you’ve changed the source code for the page. 🎓 Describe two benefits of validating HTML files.