how to place absolute tag in center in css code example

Example 1: center image with position absolute

.wrapper img {
  left: 50%;
  transform: translate(-50%,0);
  position: absolute;
  z-index: 1 
}

Example 2: how to center in absolute position

position: absolute;
margin-left: auto;
margin-right: auto;
left: 0;
right: 0;
text-align: center;