CSS box-decoration-break Property

Description

The box-decoration-break property specifies when a break (page/column/region/line) splits a box, the property controls:
1. Whether the box's margins, borders, padding, and other decorations wrap the broken edges of the box fragments.
2. How the background positioning area is derived from the box fragments and how the element's background is drawn within them.

Initial value: slice
Applies to: All elements
Inherited: No
Media: Visual
Computed value: As specified
Animatable: No
CSS Version: CSS3
JavaScript syntax: object.style.boxDecorationBreak

Syntax

box-decoration-break: slice | clone

Values

sliceNo border and no padding are inserted at a break; no box-shadow is drawn at a broken edge; border-radius does not apply to its corners; and backgrounds and the border-image are rendered for the whole box as if the box were unbroken.
cloneEach box fragment is independently wrapped with the border and padding. The border-radius and border-image and box-shadow, if any, are applied to each fragment independently. The background is drawn independently in each fragment of the element.

Example

HTML

<div class="multicol-3">

  <div class="inner-box">

  Fox - a predatory mammal of the canine family, the most common and largest species of the genus foxes.

  </div>

</div>

CSS

.multicol-3  {
  width: 350px;
  padding: 5px;
  border: 1px solid black;
  margin: 30px;
  font: 12px/16px sans-serif;
  vertical-align: text-top;
  -webkit-columns: 70px 3; /* Safari and Chrome */
  -moz-columns: 70px 3; /* Firefox */
  columns: 70px 3; /* CSS3 */
}
.inner-box {
  border: 3px solid limegreen;
  padding: 10px;
  -webkit-box-decoration-break: clone; /* Safari and Chrome */
  box-decoration-break: clone; /* CSS */
}

Result