CSS border-image-source: Define the Source of the Border Image

The CSS border-image-source property is used to specify the source or path of the image used to create the border around an element. For example:

HTML with CSS Code

<!DOCTYPE html>
<html>
<head>
   <style>
      p {border: 15px solid transparent; padding: 10px;
         border-image-source: url(images/border-image-demo.png);
         border-image-slice: 12;}
   </style>
</head>
<body>

   <p>This is a para.</p>
   
</body>
</html>

Output

This is a para.

In the above example, the border property sets the width, style, and color of an element's border. The border in this case has a width of 15 pixels, a solid style, and a transparent color.

Now the padding property specifies the amount of space between the content of an element and its border. The padding is set to 10 pixels in this case.

Then the border-image-source property specifies the image to be used as an element's border. The image file's URL in this case is images/border-image-demo.png.

Finally, the border-image-slice defines how the border image should be sliced and stretched to fit the element's border. The value of 12 in this case indicates that the border image should be divided into 9 equal parts (4 corners, 4 edges, and 1 middle), with only the middle part stretched to fit the element's border.

In the above program, the image used is:

CSS border-image-source syntax

The syntax of the border-image-source property in CSS is:

border-image-source: x;

The value of x should be any of the following:

imagePath: used to specify the source or path of an image
none: used to specify no image
initial: used to set the default value
inherit: used to inherit and set the value from its parent

Advantages of the border-image-source property in CSS

Instead of relying on predefined border styles, the "border-image-source" property enables developers to create custom borders using images.
The border will look good on any device or screen size because the border image can be scaled to any size.
The "border-image-source" property can help keep the HTML code neat and organized by reducing the need for additional markup to create custom borders.

Disadvantages of the border-image-source property in CSS

Some users might not see the custom border because some web browsers do not support the "border-image-source" property.
The performance of the web page may be impacted by the border image's size, particularly if it is large or complex.
It can be trickier for beginners to use because creating custom borders using the "border-image-source" property can be more complicated than using regular border styles.

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