table {
    border-collapse: collapse;
    width: 100%;
  }

  th, td {
    min-width: 200px;
    border: 1px solid black;
    padding: 8px;
    text-align: left;
  }

  .editable-cell {
    background-color: #f2f2f2;
    outline: none
  }

  /* Chrome, Safari, Edge, Opera */
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
-webkit-appearance: none;
margin: 0;
}

/* Firefox */
input[type=number] {
-moz-appearance: textfield;
}

.header-input {
    width: 100%;
    box-sizing: border-box;
    font-weight: bold;
    border: none;
    outline: none;
    text-transform: uppercase;
  }


  #rows,
  #columns {
  padding: 10px;
  font-size: 16px;
  margin-right: 10px;
  border-radius: 5px;
  border: 1px solid #ccc;
  }