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Editor to share with you what is the use of the border-image-outset attribute in CSS3, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

CSS3border-image-outset attribute

Function: specify the amount by which the frame image exceeds the border box.

Syntax:

Border-image-outset:length | number

Length: sets the distance between the border image (border-image) and the border. The default is 0.

Number: represents a multiple of the corresponding border-width.

Description:

1. The border-image-outset attribute specifies the amount by which the frame image exceeds the frame box, including the upper and lower parts and the left and right parts. If you omit the fourth value, it is the same as the second value. If the third value is omitted, it is the same as the first value. If the second value is omitted, it is the same as the first value.

2. The border-image-outset property does not allow any negative values.

An example of using the CSS3border-image-outset attribute

.box {

Width:600px

Margin:100pxauto

Border:1pxsolidred

}

P {

Border:15pxsolid

Padding:30px

Border-image:url (1.jpg) 100round

Border-image-outset:1px10px8px

}

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