How to use CSS Border Image

CSS3 Border Image is a great way to add a unique look and feel to the edges of an element. It allows you to create a border with an image instead of a solid color or a gradient. This can be a great way to add a bit of extra pizzazz to your website or application.

The first step to using Border Image in CSS3 is to define the image you want to use. You can do this by using the “url()” function to specify the location of the image. For example, if you were using an image called “border.png” located in the same folder as your CSS, you would specify it like this:

url(border.png)

Once you’ve defined the image, you need to specify some additional properties so that the browser knows how to display the image. The “border-image-slice” property tells the browser where to slice the image and the “border-image-width” property tells the browser how wide the border should be.

To create a border with the image, you need to specify the “border-style” property as “solid”. You can also specify the “border-width” property if you want the border to be thicker.

Finally, you need to apply the “border-image” property to the element you want to apply the border to. For example, if you wanted to apply the border to a “div” element, you would write the following code:

div {
  border-style: solid;
  border-image: url(border.png) 
                border-image-slice: 30;
                border-image-width: 10px;
}

This code will create a 10px border with the image specified in the “url()” function. The “border-image-slice” property will tell the browser to slice the image into 30 pieces, so that the border is evenly distributed around the element.

And that’s all there is to it! With just a few lines of code, you can easily create a unique and stylish border with a custom image.

Sample examples of using CSS border image

Example 1:

HTML code:

<div class="my-box">My Box</div>

CSS Code:

.my-box {
    width: 100px;
    height: 100px;
    border: 30px solid transparent;
    background-image: url(my-border-image.png);
    background-repeat: repeat;
    background-size: 30px;
}

Explanation: This example uses a 30px wide border image that is repeated around the element. The solid transparent value is used to ensure that the background color of the element does not interfere with the border image.

Example 2:

HTML Code:

<div class="my-box">My Box</div> 

CSS Code:

.my-box {
    width: 100px;
    height: 100px;
    border: 30px solid transparent;
    border-image-source: url(my-border-image.png);
    border-image-slice: 30;
    border-image-repeat: round;
    border-image-width: 30px;
}

Explanation: This example uses a 30px wide border image but instead of repeating the image, it slices it into 30 pieces and rounds the edges of the image. This allows the image to be used as a border, with the pieces ‘stitching’ together to form the border.