5 items per row, auto-resize items in flexbox

Answer 1

try below css for five items in each row.

.container {
  background: gray none repeat scroll 0 0;
  display: flex;
  flex-flow: row wrap;
  position: relative;
  width: auto;
}

.item {
  background: blue none repeat scroll 0 0;
  flex: 1 1 18%;
  height: auto;
  margin: 4px;
  padding: 20px 0;
  width: auto;
}