.form-control {
  margin-bottom: .5rem;
  padding: .3rem;
}
.spiner {
  /* https://icons8-com.translate.goog/preloaders/?_x_tr_sl=en&_x_tr_tl=pt&_x_tr_hl=pt-BR&_x_tr_pto=sc */
  background: url(./img/spiner.gif) left center / 25px 25px no-repeat ;
  
}
.complemento {
  display: flex;
  flex-direction: row;
  gap: 20px;
  
} 
.complemento :nth-of-type(2) {
  flex-grow: 1;
}