Use of -Webkit-* and -Moz-*

Question

The prefixes -webkit- or -moz- shall be used for elements operating without the use of such elements (such as box-shadow)?

Normally those who use Chrome and Firefox have versions that support many elements, which makes it unnecessary to add these codes.

Answer 1

The use of browser elements such as Webkit and Moz is only to be used when the style application is not rendered in browsers that do not support CSS3. Elements that work without their declaration is normally made.