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border-width property

Browser support:
Specifies the width of the element's border.
JavaScript page for this property: borderWidth. You can find other example(s) there.

Possible values:

 One of the following values: 
 This value can be used from 1 to 4 times (use the space character to separate them) 
 One of the following values: 
<border width in non-negative length>

Description of values:

border width in non-negative length
The width of the border in length units. For the supported length units, see the length page.
Takes the value of this property from the computed style of the parent element.
Greater than the medium width.
Less than the medium width.
Default: medium.

  • If only one border-width value is set, it is used for all four borders.
  • If two border-width values are specified, the first value is used for the top and bottom borders, the second one is for the left and right borders.
  • If three border-width values are set, the first value is used for the top border, the second one is for the left and right borders and the third one is for the bottom border.
  • If four border-width values are specified, the order is top, right, bottom, left (clockwise from top).

Example HTML code 1:

This example illustrates the use of the border-width property:
        .example {
            border-color: blue;
            border-width: 1px;
            border-style: solid;
    <div class="example">Border-width: 1px</div>
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