Answers for "css vertical alight on center"

css align items vertical center

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

css vertical center

/* No Flexbox */
.parent {
  position: relative;
}
.child {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
}

/* With Flexbox */

.parent {
  display: flex;
  flex-direction: column;
  justify-content: center;
}