how to space children element evenly with flexbox code example

Example 1: flex css end

.item {
  align-self:flex-start | flex-end | center | baseline | stretch;
}

Example 2: flexbox css

.container {
  align-content: flex-start | flex-end | center | space-between | space-around | space-evenly | stretch | start | end | baseline | first baseline | last baseline + ... safe | unsafe;
}