CSI CSI has stands for cascading style sheets.
So it's basically used this style, an HTML document.
The CSX document contains lines that are called CSX rules, and it says, as rule is formed like this
selecter, which selects the elements to apply the updated property values to.
And then a set of properties which have values set to update how the digital content is displayed.
So let's go back and have a look at our code again, the rules can be applied to a document or an element
in three ways.
First one is with an external style file that is linked like this.
And the developer can link a local access file on the same server or on a remote server.
And here you see the rules, it will be applied to the selectors, which will point to the elements
in the document.
And then the second one is internal style.
Like Mark here.
So it works completely the same, but it is on the page that is affected.
And the third one is in line style, so to define success rules for an element, the developer must
use this style attribute.
And that's how this works.
So as we talked about in our browser section, the browser combines the HTML document and the style
documents together into Dume.
So you can think of the DOM as it represents the document in the browsers memory.
Then the browser displays the content of the DOM.
And do two different engines and browsers.
The browser may sometimes interpret shiest rules a little differently so we can benefit by this by preparing
payloads to manipulate the application logic.
So that doesn't quite make sense.
Let's talk more about Dom.