CSS Outlines

CSS Outlines
Published on 2021-07-08 09:06:13

Parameter details:

  • dotted - dotted outline
  • dashed - dashed outline
  • solid-  solid outline
  • double-  double outline
  • groove-  3D grooved outline depends on the outline-color value
  • ridge-  3D ridged outline depends on the outline-color value
  • inset-  3D inset outline depends on the outline-color value
  • outset-  3D outset outline depends on the outline-color value
  • none-  no outline
  • hidden-  hidden outline



The outline is a line that goes around the element, outside of the border. In contrast to borders, outlines do not take any space in the box model. So adding an outline to an element does not affect the position of the element or other elements.

In addition, outlines can be non-rectangular in some browsers. This can happen if the outline is applied to a span element that has text with different font-size properties inside it. Unlike borders, outlines cannot have rounded corners.

The essential parts of the outline are outline-color, outline-style, and outline-width.

The definition of an outline is equivalent to the definition of a border:

outline: 1px solid black;



The outline-style property is used to set the style of the outline of an element.


  border: 1px solid black;
  outline-color: blue;
  line-height: 30px;
  outline-style: dotted;
  outline-style: dashed;
  outline-style: solid;
outline-style: double;
outline-style: groove;
outline-style: ridge;
outline-style: inset;
outline-style: outset;


<p class="p1">A dotted outline</p>
<p class="p2">A dashed outline</p>
<p class="p3">A solid outline</p>
<p class="p4">A double outline</p>
<p class="p5">A groove outline</p>
<p class="p6">A ridge outline</p>
<p class="p7">An inset outline</p>
<p class="p8">An outset outline</p>

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