full width css code example

Example 1: how do i make a div full width with css

.row-full{
 width: 100vw;
 position: relative;
 margin-left: -50vw;
 height: 100px;
 margin-top: 100px;
 left: 50%;
}

Example 2: css tricks stretch content full witdh

.full-width {
  width: 100vw;
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
}