CSS Reference

"outline-width" - css property (v. css 2)

  • Sets the width of an outline.
  • Possible values are border-width or inherit.
  • Initial value: medium
  • The property is not inherited
  • HTML usage: All elements
  • Browsers that support the outline-width - property :
    Internet Explorer Mozilla Firefox Opera Google Chrome Apple Safari

Possible width values:

Values Comments CSS
thin, medium or thick The width of the keyword values are UA dependent, but the following holds: 'thin' <= 'medium' <= 'thick'. 1
length With this you specify a value with a unit identifier. 1
inherit Will inherit the value from parent specification. This property value is new with CSS 2. 2

Possible unit identifier:

unit identifier Comments CSS
em The relative unit 'em' is relative to the font size of the element itself. 1
ex The relative unit 'ex' is relative to the font size of the element itself. 1
px Pixels, relative to the viewing device 1
in inches -> 1 inch is equal to 2.54 centimeters. 1
cm centimeters. 1
mm millimeters. 1
pt points -> the points used by CSS2 are equal to 1/72th of an inch. 1
pc picas -> 1 pica is equal to 12 points. 1

Property "outline-width" example:

<!DOCTYPE HTML >
<html>
  <head>
    <style   type="text/css">
      .div1 { position: relative;
              width: 300px;
              top: 10px;
              left: 10px;
              outline-color: blue;
              outline-style: groove;
              outline-width: 10px;
      }
    </style>
  </head>
  <body >
    <div class="div1">
      Some text in the DIV element<br/>
      outline-color: blue;<br/>
      outline-style: groove;<br/>
      outline-width: 10px;<br/>
    </div>
  </body>
</html>

Another property "outline-width" example:

<!DOCTYPE HTML >
<html>
  <head>
    <style   type="text/css">
      .div1 { position: relative;
              height: 200px;
              width: 240px;
              outline: #0000FF 2px solid;}
      .p1 { position: relative;
            top: 10px;
            left: 10px;
            outline-color: inherit;
            outline-style:  inherit;
            outline-width:  inherit;
      }
    </style>
  </head>
  <body >
    <div class="div1">
      Some text in the DIV element
      <p class="p1" ><img width="170px" height="100px"
       src="images/ferrari.png" alt="A ferrari image">
      </p>
      The above P element inherits the
      outline of the DIV element
    </div>
  </body>
</html>

Javascript access:

// To SET values ([o] is the target object)
[o].style.outlineWidth="outline-width value"
// To GET values you must first get the computed style object
// To get that object in IE or Opera:
var cStyle=[o].currentStyle;
// To get that object in Firefox, Chrome or Safari (w3c-type):
var cStyle=window.getComputedStyle([o],null)
// To GET the property value:
var value=cStyle.outlineWidth;
/* IE and Opera will return a value in units as used with a Set. Firefox will return a calculated float value in pixel(px). Chrome or Safari will return a calculated int value in pixel(px)*/
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