Answers for "flex column width"

display flex column width auto

display: flex;
flex: 0 0 auto;

space between flexbox

justify-content: space-between;

css flex fixed width

.flexbox .red {
  flex: 0 0 25em;
}

flexbox container width of content

display: inline-flex;

flexbox css

.container {
  justify-content: flex-start | flex-end | center | space-between | space-around | space-evenly | start | end | left | right ... + safe | unsafe;
}