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You can control the thickness, or width, of borders with the border-width property. The value of border-width is given in pixels.

p { border-style: solid; border-width: 5px; }

In the example above, the solid borders of all paragraphs on the page would be set to a thickness of 5 pixels.

It's also possible to also set the border-width property to one of the following named thicknesses:

  1. thin
  2. medium
  3. thick

While these values are perfectly valid, you may not see them often, but it's good to know that they exist.

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