.form_botao {
    width: 100px;
    height: 30px;
    border-color: gray;
    background-color: gray;
    color: white;
    font-weight: bold;
  }
  .form_botao:hover {
    width: 100px;
    height: 30px;
    background-color: white;
    color: black;
    font-weight: bold;
  }