.btn {
  background: $concrete;
  color: $text-color;
  display: inline-block;
  padding: 10px;
  margin: 5px;
  border-radius: 3px;
  border: 0;
  white-space: nowrap;
  vertical-align: middle;
  cursor: pointer;
  position: relative;
  &:hover {
    background: color($concrete blackness(40%));
  }
  &.btn-alert {
    background: $aliz;
    color: $clouds;
    &:hover {
      background: color($aliz blackness(30%));
    }
  }
  &.btn-success {
    background: $emerald;
    color: $clouds;
    &:hover {
      background: color($emerald blackness(30%));
    }
  }
  &.btn-info {
    background: $asph;
    color: $clouds;
    &:hover {
      background: color($asph blackness(30%));
    }
  }
}