.alert {
  background: color($concrete blackness(30%));
  border-radius: 3px;
  border: 1px solid #333333;
  display: block;
  width: 100%;
  padding: 13px;
  &.alert-danger {
    background: color($aliz lightness(80%));
    border: 1px solid $aliz;
  }
  &.alert-info {
    background: color($asph lightness(60%));
    border: 1px solid $asph;
  }
  &.alert-success {
    background: color($emerald lightness(70%));
    border: 1px solid $emerald;
  }
}