.tableFixHead {
    overflow-y: auto;
    height: 200px;
    text-align: left;
    display:block;
  
  }
  .tableFixHead thead th {
    position: sticky;
    top: 0;
  }

  table {
    border-collapse: collapse;
    width: 100%;
  }
  th,
  td {
    padding: 8px 16px;
    border: 2px solid #ccc;
  }
  th {
    background: #eee;
  }

  .alertaMontoPrestamo{  
    color: red;
    background-color: yellow;
}