CSS

position absolute center

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

position absolute center

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

position absolute center

position: absolute;
margin-left: auto;
margin-right: auto;
left: 0;
right: 0;

center div absolute

#content {
  position: absolute; 
  left: 0; 
  right: 0; 
  margin-left: auto; 
  margin-right: auto; 
  width: 100px; /* Need a specific value to work */
}

how to center an absolute div

//How to center an absolute div
.child {
    position: absolute;
    top: 50%;  
    left: 50%; 
    transform: translate(-50%, -50%);
}

position absolute align center

position:absolute;
left:0;
right:0;
margin-left:auto;
margin-right:auto;

centre align in position absolute

position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);

position absolute center

.parent {
  	height: 100vh;
}

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

position absolute horizontally center

/*if you want to align center on left attribute.
The same thing is for top alignment, you could use margin-top: (width/2 of your div), the concept is the same of left attribute.
It's important to set header element to position:relative.
try this:
*/
#logo {
    background:red;
    height:50px;
    position:absolute;
    width:50px;
    left:50%;
    margin-left:-25px;
}

/*If you would like to not use calculations you can do this:*/

#logo {
  background:red;
  width:50px;
  height:50px;
  position:absolute;
  left: 0;
  right: 0;
  margin: 0 auto;
}

center absolute position

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

absolute center css

.btn__play {
	position: absolute
    top: 50%
    left: 50%
    transform: translate(-50%, -50%)
}

center absolute element

.child {
    position: absolute;
    top: 50%;  /* position the top  edge of the element at the middle of the parent */
    left: 50%; /* position the left edge of the element at the middle of the parent */

    transform: translate(-50%, -50%); /* This is a shorthand of
                                         translateX(-50%) and translateY(-50%) */
}

center absolute suedo element

 left: 50%;
position:absolute;
top:50%;
transform:translate(-50%,-50%);

align absolute div center

.container {
  left:0;
  right:0;

  margin-left: auto;
  margin-right: auto;

  position: absolute;
  width: 40%;

  outline: 1px solid black;
  background: white;
}