html - Do I have always use .css files? -

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are .css files needed? or may have .css "basic" file , define other style items inside html page?

does padding, borders , on have defined in .css file stored separately, or may embed html page?

it technically possible use inline css formatting exclusively , have no external stylesheet. can embed stylesheet within html document. best practice in web design separate out css separate stylesheet. reason css stylesheet exists purpose of defining presentation style of document. html file exists define structure , content of document. , perhaps may have javascript files exist add additional behavior document.

keeping presentation, markup, , behavior separate creates cleaner design.

from practical perspective, if have single external css stylesheet browser can cache it. if multiple pages on site have same , feel, can use same external stylesheet needs downloaded once web browser. make network bandwidth bills lower creating faster end user experience.


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