position absolute center

1.child {
2    position: absolute;
3    top: 50%;  
4    left: 50%; 
5    transform: translate(-50%, -50%);
6}

1.wrapper img {
2  left: 50%;
3  transform: translate(-50%,0);
4  position: absolute;
5  z-index: 1 
6}

1.parent{  position: relative;}.child{  position: absolute;  top: 50%;  left: 50%;  transform: translate(-50%, -50%);}

1position: absolute;
2margin-left: auto;
3margin-right: auto;
4left: 0;
5right: 0;
6text-align: center;

1position: absolute;
2top: 50%;
3left: 50%;
4transform: translate(-50%, -50%);
5

1position: absolute;
2margin-left: auto;
3margin-right: auto;
4left: 0;
5right: 0;