.flex-parent {
  min-height: 200px;
  flex-wrap: wrap;
}

.flex-child {
  height: 50px;
  width: 280px;
  text-align: center;
  padding-left: 10px;
  padding-right: 10px;
}

.flex-start {
  align-content: flex-start;
}

.flex-end {
  align-content: flex-end;
}

.stretch > .flex-child {
  height: auto;
}

.stretch {
  align-content: stretch;
}

.center {
  align-content: center;
}

.space-between {
  align-content: space-between;
}

.space-around {
  align-content: space-around;
}

li {
  box-shadow: 0 0 2px 2px hsla(0, 100%, 100%, 0.3);
  margin-bottom: 20px;
}