.socials.circles
  +flex(flex-start, center)

  a
    +flex(center, center)
    width: 40px
    height: 40px
    border: 1px solid rgba($grey, 0.25)
    border-radius: 100%
    transition: border 0.3s

    + a
      margin-left: 10px

    &:hover
      border-color: $grey