css flex center div vertically and horizontally code example

Example 1: css flex center horizontally and vertically

display: flex;
align-items: center;
justify-content: center;

Example 2: center div horizontally and vertically

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

Example 3: flexbox align center vertically

.Aligner {
  display: flex;
  align-items: center;
  justify-content: center;
}

.Aligner-item {
  max-width: 50%;
}

.Aligner-item--top {
  align-self: flex-start;
}

.Aligner-item--bottom {
  align-self: flex-end;
}

Example 4: centering with flexbox

/* HORIZONTAL */
justify-content: center;

/* VERTICAL */
align-items: center;