css padding exaclty center code example

Example 1: center with css

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

Example 2: vertical align css

.container{
  display: table;
}

.div-inside-container{
  display: table-cell;
  vertical-align: middle;
}