.a input {
  outline: 0;
  border-width: 0 0 2px;
  border-color: black;
  opacity: 1;
}
.a input:focus {
  border-color: black
}

.a::placeholder { /* Chrome, Firefox, Opera, Safari 10.1+ */

  opacity: 1; /* Firefox */
}

.ack{
  font-size: 1.5rem;
}

.ack2{
  font-size: 1.5rem;
}

table.table-bordered{
    border:1px solid black;
    margin-top:20px;
  }
table.table-bordered > thead > tr > th{
    border:1px solid black;
}
table.table-bordered > tbody > tr > td{
    border:1px solid black;
}