border-bottom property CSS Reference

Definition and Usage

The border-bottom CSS property is a shorthand that sets the values of border-bottom-color, border-bottom-style, and border-bottom-width. These properties describe the bottom border of elements.

• Initial the concatenation of the initial values of its longhand properties:
  • border-bottom-width: medium
  • border-bottom-style: none
  • border-bottom-color: currentColor
• Applies to all elements
• Inherited no
• Media visual
• Computed Value as each of the properties of the shorthand:
  • border-bottom-width: the absolute length or 0 if border-bottom-style is none or hidden
  • border-bottom-style: as specified
  • border-bottom-color: If the value is translucent, the computed value will be the rgba() corresponding one. If it isn't, it will be the rgb() corresponding one. The transparent keyword maps to rgb(0,0,0).
• Animatable as each of the properties of the shorthand:
  • border-bottom-color: yes, as a color
  • border-bottom-style: no
  • border-bottom-width: yes, as a length
• Canonical order order of appearance in the formal grammar of the values

Syntax

Formal syntax: <br-width> || <br-style> || <color>

Values

<br-width> 

See border-bottom-width.

<br-style> 

See border-bottom-style.

<color> 

See border-bottom-color.

Examples

element {
  border-bottom: 1px solid #000;
}

Compatibility

Desktop browsers

Mobile browsers