Answers for "flex box align"

center div css flex

section {
  width: 200px;
  border: 1px solid #2d2d2d;
  display: flex;
  justify-content: center;
}

how to align a flex container center

.table-wrapper {
  display: flex;
  flex-direction: column;
  padding: 2rem;
  margin: 0 auto;
}

css flexbox syntax

Display: flex 
Flex-direction: row | row-reverse | column | column-reverse
align-self: flex-start | flex-end | center | baseline | stretch
justify-content: start |  center | space-between | space-around | space-evenly