Every element on a page is a rectangular box. All the way from the root <html> element to the lowly <i> element. You can apply a border to any of those rectangular boxes with the border property. Here's a classic example of a box with a border:

.box {
  width: 200px;
  height: 100px;
  border: 3px solid red;
  background: #eee;

The above was the shorthand syntax, in the format:

border:  <border-width> || <border-style> || <color>

It could have been expressed through each individual property:

.box {
  border-width: 3px;   /* defaults to medium */
  border-color: red;   /* defaults to color (literally, the color property) */
  border-style: solid; /* defaults to none */

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  1. Druid of Lûhn
    Permalink to comment#

    Any more about borders?
    border-radius, …

  2. John Lueders
    Permalink to comment#

    Hi Chris,

    Would like to see the list of available border style properties here. Believe that would be helpful.

    hidden, dotted, dashed, solid, double, groove, ridge, inset, outset

    Also, you insight/opinion on these styles. I see solid, dotted, dashed frequently but not the others…are they going out of style?…are they being deprecated?

    All the best,


  3. cyran

    how this site is really helpful but am in agreement with john what about the other styles hidden, dotted, dashed, solid, double, groove, ridge, inset, outset?
    why are they not included.

  4. Robbee

    Thanks for the help. This site is good when I have trouble making the code right.

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