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1. Understanding and knowledge of Web standards and website
Tag closure, label lowercase, no nesting, improve search robot search probability, use of external chain CSS and JS scripts, structure behavior of the separation, file download and page speed, content can be accessed by more users, content can be accessed by a wider range of devices, less code and components, easy maintenance, revision convenience, No need to change the content of the page, provide a print version without the need to copy content, improve the usability of the site;

What is the difference between 2.xhtml and HTML?
HTML is a basic Web page design language, XHTML is an XML-based labeling language
The most important differences are:
XHTML elements must be nested correctly.
XHTML elements must be closed.
The label name must be in lowercase letters.
The XHTML document must have a root element.

3.Doctype? Strict and promiscuous modes-how do you trigger these two patterns to differentiate between them?
Used to declare documents using that specification (html/xhtml) is generally strictly over-frame-based HTML documents
Adding an XML declaration can be triggered and resolved to a bug that IE5.5 has IE5.5

4. What are the inline elements? What are the block-level elements? CSS box model?
Block-level elements: div p H1 H2 H3 h4 form UL
Inline elements: A b br i span input Select
CSS box model: Content, Border, margin,padding

What are the ways 5.CSS is introduced? What is the difference between link and @import?
Inline embedded outer chain import
Difference: Loading at the same time
The former does not have compatibility, the latter CSS2.1 the following browsers do not support
Link supports the use of JavaScript to change styles, which cannot be

What are the 6.CSS selectors? What attributes can be inherited? How is the priority algorithm calculated? Inline and important which priority is high?
Tag Selector class Selector ID Selector
Inheritance is better than specifying id>class> tag selection
The latter has a high priority

7. What are the three layers of the front-end page, and what are the roles?
Structure Layer Html Presentation layer CSS behavior Layer JS

What is the basic statement composition of 8.CSS?
Selector {Attribute 1: value 1; Property 2: Value 2; ...}

9. What are the browsers that you have made? What are the cores of the browser?
IE (ie kernel) firefox (Gecko) Google (WebKit) opear (Presto)

10. How to solve several IE6 bugs
1. Use display for double-sided bug float
2.3 MP problem using float caused by use of dislpay:inline-3px
3. Hyperlink hover After click fails to use the correct writing order link visited hover active
4.Ie z-index problem add position:relative to Parent
5.Png Transparent use JS code to change
6.min-height min Height! Important Solution '
7.select hiding under IE6 using IFRAME nesting
8. Why there is no way to define a width container around 1px (IE6 default row height, using over:hidden,zoom:0.08 line-height:1px)

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