CSS - Button :focus, disabled, :active

Question

.btn {
  &:focus {
    box-shadow: none !important;
  }
  &-secondary {
    &:not(:disabled):not(.disabled):active {
      background: none;
      color: #a5adb5;
      border: 0;
      border-bottom: 1px solid #a5adb5;
    
    }
  }
}