.flex
  display: flex

.flex--wrap
  flex-wrap: wrap

.flex--center-x
  justify-content: center

.flex--center-y
  align-items: center

.flex--center-all
  justify-content: center
  align-items: center
  align-content: center

.flex--right
  justify-content: flex-end

.flex--space-between
  justify-content: space-between

.flex--space-around
  justify-content: space-around

.flex--vertical
  flex-direction: column