Key Concepts to Mastering CSS
A CSS style sheet consists of rules, which targets HTML by using selectors that describe the elements on which the styles should've applied.
*Rule Syntax: *The rule consists of a selector follows by a block of some CSS properties contained inside the curly braces.CSS properties consist of property and a value that is separated by a colon and are delimited with semicolons. However, a value may be a single value or a collection of multiple values, depending on the property.
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It is fun to build cool and good looking pages when you know CSS like the back of your hand. But when you have a few hundred lines of code, this is exactly when things begin to get complicated and messy. This is where CSS preprocessors come to play, helping you to manage and improve the maintainability of your code.