Questions for an interview on CSS and HTML for example for the maker-up

HTML Questions:

• What doctype needed doctype and how many species can you name?
• What is the difference between standards mode and quirks mode?
• What restrictions do XHTML standards impose?
  • Can there be problems when submitting pages with the type application/xhtml+xml ?
• How should you design a page in which content can be in different languages?
  • What to keep in mind when developing multi-language sites?
• Can XHTML syntax be used in HTML5?
• How to use XML in HTML5?
• How are the data- attributes useful?
• What are the box models in HTML4 and are there any differences in HTML5?
• If you consider HTML5 as an open web platform, what is it built on, what components does it consist of?
• Explain the difference between cookies, sessionStorage and localStorage.
• Are the layout of mail templates familiar with pitfalls?
• What is the difference between GET and POST ?

CSS Questions:

• What is "reset" CSS and what is it for?
• Explain what are floats and how do they work?
• What clever methods do you know and where do they apply?
• What are CSS sprites? How are they implemented on a page or site?
• What are your favorite methods of replacing text with a picture (image replacement) and when do you use them?
• CSS property hacks, conditionally included .css files ...
• How do you ensure that pages are displayed in old / limited browsers?
  • What techniques / processes are you using?
• What ways can you visually hide an item (leaving it available for the screen reader, screen reader)?
• Have you ever used grid layout (grid system, grid design)? If so, what is your favorite?
• Have you ever used or implemented media queries or layout for mobile devices?
• Have you ever styled SVG?
• How to optimize pages for printing?
• What are the pitfalls in optimizing CSS performance?
• Do you use CSS preprocessors? (SASS, Compass, Bourbon, Stylus, LESS)
  • If so, tell me what you like and don't like about them?
• How do you design a layout that uses non-standard fonts?
  • Webfonts (services like Google Webfonts, Typekit, Fontsquirrel etc.)
• Explain how the browser determines which elements to apply CSS styles to?
• Have to deal with Retina-displays?
• Have you heard about the BEM system (Block-Element-Modifier)?
  • If so, what is its essence? Tell us about the notification system of selectors.