Answers for "css center a div absolute"

position absolute center

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

css absolute center horizontal

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