<style type="text/css">
  input[type="number"] {
    -webkit-appearance: textfield;
    -moz-appearance: textfield;
    appearance: textfield;
  }

  input[type=number]::-webkit-inner-spin-button,
  input[type=number]::-webkit-outer-spin-button {
    -webkit-appearance: none;
  }

  .number-input {
    border: 2px solid #ddd;
    display: inline-flex;
    height: 38px;
  }

  .number-input,
  .number-input * {
    box-sizing: border-box;
  }

  .number-input button {
    outline:none;
    -webkit-appearance: none;
    background-color: transparent;
    border: none;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 35px;
    cursor: pointer;
    margin: 0;
    position: relative;
  }

  .number-input button:before,
  .number-input button:after {
    display: inline-block;
    position: absolute;
    content: '';
    width: 1rem;
    height: 2px;
    background-color: #212121;
    transform: translate(-50%, -50%);
  }
  .number-input button.plus:after {
    transform: translate(-50%, -50%) rotate(90deg);
  }

  .number-input input[type=number] {
    font-family: sans-serif;
    max-width: 5rem;
    padding: 5px;
    border: solid #ddd;
    border-width: 0 2px;
    font-size: 16px;
    height: 26px;
    font-weight: bold;
    text-align: center;
    color:black;
  }
</style>