CSS stands for Cascading Style Sheets , which describes how HTML elements display on screen, paper and other media. CSS can control the layout of multiple websites at once.

CSS is added to HTML elements in three ways:

1. Inline - uses style properties (Style) in HTML elements
2. Internal - use elements
   
   
   
   

   Title

   
   

   Network administrator.

   
   
   
   

   External CSS

   External CSS (external CSS) defines styles for multiple HTML pages with an external file (stylesheet). This way, you can change the look of the whole website, just a single CSS file.

   To use external CSS, just link a reference to the file in the section of the HTML page.

    OCTYPE html> 
   
   
    
   
   
   
   

   Title

   Network administrator.

   This stylesheet can be written on any text editor. The file must not contain any HTML code and must be saved with the .css extension. This is an example of a section in this CSS file.

    bod y { 
     background-color: powderblue; 
    } 
    h1 { 
     color: blue; 
    } 
    p { 
     color: red; 
    } 

   CSS Font

   1. color in CSS determines the text color.
   2. font-family determines the font used.
   3. font-size specifies the font-size used.

    OCTYPE html> 
   
   
   
   
   
   
   

   Post title

   Network administrator.

   CSS Border

   border defines the border around the HTML element.

    p  { 
     border: 1px solid powderblue; 
    } 

   CSS Padding

   padding defines the space between text and border.

    p  { 
     border: 1px solid powderblue; 
     padding: 30px; 
    } 

   CSS Margin

   margin determines the margin, ie the space outside the border.

    p { 
     border: 1px solid powderblue; 
     margin: 50px; 
    } 

   Id attribute

   The id attribute is used to specify a specific style for a particular element.

   Network administration is a technology website

   Then specify the style for this element with id

    #p01 { 
     color: blue; 
    } 

   Note : The id of an element must be unique within a page.

   Class properties

   When you need to define a certain style for a particular type of element, use the class. attribute class.

   I differences.

   then define the style for the element with its own class.

    p.error { 
     color: red; 
    } 

   External reference

   External stylesheet can be referenced by the HTML file by the URL or the path to the current web page. The following example uses the full path to a stylesheet.

    
    href="https://www.quantrimang.com/html/styles.css"> 

   The following example leads to a stylesheet located in an HTML folder on the current web page.

   The following example leads to a stylesheet located in the same directory in the current page.

   Last lesson: Colors in HTML

   The following article: Links in HTML