CSS3 Border

With CSS3, you can apply images to an element's borders.

Using CSS3 Borders

The CSS3 provides two new properties for styling the borders of an element in a more elegant way — the border-image property for adding the images to borders, and the border-radius property for making the rounded corners without using any images.

The following section will describe you these new border properties of CSS3, for other border related properties please check out the CSS border tutorial.

Creating CSS3 Rounded Corners

The border-radius property can be used to create rounded corners. This property typically defines the shape of the corner of the outer border edge. Prior to CSS3, sliced images are used for creating the rounded corners that was rather bothersome.

  • .box {
  •     width: 300px;
  •     height: 150px;
  •     background: #ffb6c1;
  •     border: 2px solid #f08080;
  •     border-radius: 20px;
  • } 

Adding CSS3 Border Images

The border-image property allows you to specify an image to act as an element's border.
The design of the border is created from the sides and corners of the image specified in border-image source URL. The border image may be sliced, repeated, scaled and stretched in various ways to fit the size of the border image area.

  • .box {
  •     width: 300px;
  •     height: 150px;
  •     border: 15px solid transparent;
  •     -webkit-border-image: url("border.png") 30 30 round; /* Safari 3.1-5 */
  •     -o-border-image: url("border.png") 30 30 round; /* Opera 11-12.1 */
  •     border-image: url("border.png") 30 30 round;
  • } 
 

Tip:The round option is a variation of the repeat option that distributes the image tiles in such a way that the ends are nicely connected.

 
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