XHTML: Common Validation Errors
Unescaped Ampersand ("&")
Example:
<a href="foo.cgi?chapter=1§ion=2">...</a>
Possible Validator Report: Unknown entity…
Solution: Always use & in place of &.
Example:
<a href="foo.cgi?chapter=1§ion=2">...</a>
Possible Validator Report: Unknown entity…
Solution: Always use & in place of &.
In CSS, pattern matching rules determine which style rules apply to elements in the document tree. These patterns are called selectors and may range from simple element names to complex patterns. If all conditions in the pattern are true for a certain element, the selector matches the element and the appropriate style will be applied when the element is rendered in a CSS-capable browser.
There are three ways of inserting style information:
CSS syntax is made up of three parts:
CSS stands for Cascading Style Sheets.
A style defines how an HTML element is displayed.
Style information can be stored: