Inner Border field has been created to manage box-shadow CSS property. This border will always be displayed between padding and border. Thanks to that you can create borders with 2 different colors.
General information about Inner Borders
The gap between Inner Border and element content can be extended with an use of Paddings. Gap between Inner Border and other elements can be extended with an use of Margins.
Source: www.w3schools.com
How to use Inner Border field?
By default, Inner Border field have 2 options to fill up. The list below will explain each of them.
- Width – an integer only field to specify width of border for all edges in pixels
- Color – choose border color. This color picker supports transparency.