CSS env() Function

The env() function is used to insert the value of a user agent-defined environment variable into your CSS. It is almost the same as var() in CSS except these values are user-agent-defined rather than user-defined. These variables are globally scoped. 

Syntax:

env( <custom-ident> , <declaration-value> )

Note: Please note that env() property values are case-sensitive.

Property values:

  • SAFE-AREA-INSET-TOP: It defines the top of the rectangle from the edge of the viewport.

    Syntax:



    env(SAFE-AREA-INSET-TOP,Integer_value)

    Example:

    HTML

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    code

    <!DOCTYPE html>
    <html lang="en">
      
    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content=
            "width=device-width, initial-scale=1.0">
      
        <style>
            p {
                background-color: green;
                width: fit-content;
                color: white;
                font-size: 20px;
                border: env(SAFE-AREA-INSET-TOP, 
                            5px) solid black;
                padding: 10px;
                padding: env(SAFE-AREA-INSET-TOP, 50px) 
                    env(safe-area-inset-right, 50px) 
                    env(safe-area-inset-bottom, 50px) 
                    env(safe-area-inset-left, 50px)
            }
        </style>
    </head>
      
    <body>
        <h2>50px padding from top</h2>
      
        <p>Geeks for geeks</p>
    </body>
      
    </html>

    chevron_right

    

    

    
                        filter_none
    

    

    

    

    

    Output:
    

    • 



    

  • SAFE-AREA-INSET-RIGHT: It defines the right of the rectangle from the edge of the viewport.

    Syntax:
    

    env(SAFE-AREA-INSET-RIGHT,Integer_value);
    

    Example:
    

    

    HTML
    

    


    

    

    

    

    
                                    filter_none
    

    

                                        edit
    
                                    close
    

    

                                        play_arrow
    

    

                                        link
    
                                    brightness_4
    
                                    code
                                
    

    

    

    

    

    

    


    


    

    <!DOCTYPE html> 
    

    <html lang="en"> 
    

      
    

    <head> 
    

        <meta charset="UTF-8"> 
    

        <meta name="viewport" content= 
    

            "width=device-width, initial-scale=1.0"> 
    

      
    

        <style> 
    

            p { 
    

                background-color: green; 
    

                width: fit-content; 
    

                color: white; 
    

                font-size: 20px; 
    

                border: 
    

                    env(SAFE-AREA-INSET-TOP, 5px) solid black; 
    

                padding: 10px; 
    

                padding: env(safe-area-inset-top, 50px)  
    

                        env(SAFE-AREA-INSET-RIGHT, 50px)  
    

                        env(safe-area-inset-bottom, 50px)  
    

                        env(safe-area-inset-left, 50px) 
    

            } 
    

        </style> 
    

    </head> 
    

      
    

    <body> 
    

        <h2>50px padding from right</h2> 
    

      
    

        <p>Geeks for geeks</p> 
    

    </body> 
    

      
    

    </html> 
    

    
    		

    
    

    

    

    

    

    

    
                        chevron_right
    

    

    

    
                        filter_none
    

    

    

    

    

    Output:
    

    • 



    

  • SAFE-AREA-INSET-LEFT: It defines the left of the rectangle from the edge of the viewport.

    Syntax:
    

    env(SAFE-AREA-INSET-LEFT,Integer_value);

    

    Example:
    

    

    HTML
    

    


    

    

    

    

    
                                    filter_none
    

    

                                        edit
    
                                    close
    

    

                                        play_arrow
    

    

                                        link
    
                                    brightness_4
    
                                    code
                                
    

    

    

    

    

    

    


    


    

    <!DOCTYPE html> 
    

    <html lang="en"> 
    

      
    

    <head> 
    

        <meta charset="UTF-8"> 
    

        <meta name="viewport" content= 
    

            "width=device-width, initial-scale=1.0"> 
    

      
    

        <style> 
    

            p { 
    

                background-color: green; 
    

                width: fit-content; 
    

                color: white; 
    

                font-size: 20px; 
    

                border: 
    

                    env(SAFE-AREA-INSET-TOP, 5px) solid black; 
    

                padding: 10px; 
    

                padding: env(safe-area-inset-top, 50px)  
    

                        env(safe-area-inset-bottom, 50px)  
    

                        env(safe-area-inset-right, 50px)  
    

                        env(SAFE-AREA-INSET-LEFT, 50px) 
    

            } 
    

        </style> 
    

    </head> 
    

      
    

    <body> 
    

        <h2>50px padding from left</h2> 
    

      
    

        <p>Geeks for geeks</p> 
    

    </body> 
    

      
    

    </html> 
    

    
    		

    
    

    

    

    

    

    

    
                        chevron_right
    

    

    

    
                        filter_none
    

    

    

    

    

    Output:
    

    • 



    

  • SAFE-AREA-INSET-BOTTOM: It defines the bottom of the rectangle from the edge of the viewport.

    Syntax:
    

    env(SAFE-AREA-INSET-BOTTOM,Integer_value);
    

    Example:
    

    

    HTML
    

    


    

    

    

    

    
                                    filter_none
    

    

                                        edit
    
                                    close
    

    

                                        play_arrow
    

    

                                        link
    
                                    brightness_4
    
                                    code
                                
    

    

    

    

    

    

    


    


    

    <!DOCTYPE html> 
    

    <html lang="en"> 
    

      
    

    <head> 
    

        <meta charset="UTF-8"> 
    

        <meta name="viewport" content= 
    

            "width=device-width, initial-scale=1.0"> 
    

      
    

        <style> 
    

            p { 
    

                background-color: green; 
    

                width: fit-content; 
    

                color: white; 
    

                font-size: 20px; 
    

                border: 
    

                    env(SAFE-AREA-INSET-TOP, 5px) solid black; 
    

                padding: 10px; 
    

                padding: env(safe-area-inset-top, 50px)  
    

                    env(safe-area-inset-left, 50px)  
    

                    env(SAFE-AREA-INSET-BOTTOM, 50px)  
    

                    env(safe-area-inset-right, 50px) 
    

            } 
    

        </style> 
    

    </head> 
    

      
    

    <body> 
    

        <h2>50px padding from bottom</h2> 
    

      
    

        <p>Geeks for geeks</p> 
    

    </body> 
    

      
    

    </html> 
    

    
    		

    
    

    

    

    

    

    

    
                        chevron_right
    

    

    

    
                        filter_none
    

    

    

    

    

    Output:
    

    • 



Supported browsers: 


    

  • Chrome
    • 

  • Edge
    • 

  • Firefox
    • 

  • Safari
    • 

  • Opera
    • 






    

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