:before css image code example

Example 1: add image ::before css

element::after{
  content:url('blackCarrot.png'); 
  position:relative; /*or absolute*/
  z-index:100000; 
  left:-50px;
  top:10px;
}

Example 2: how use befor after for image

/* for child  */

.custom_img:after {
    content: "";
    background-color: #2359cf;
    height: 400px;
    width: 70%;
    top: -15px;
    right: -6px;
    position: absolute;
    z-index: 999;
}