.nice-number {
  display: inline-flex;
  justify-content: stretch;
}

.nice-number input, .nice-number input[type="number"] {
  vertical-align: middle;
  -moz-appearance: textfield;
  box-sizing: content-box;
  margin: 0;
  text-align: center;
}

.nice-number input::-webkit-inner-spin-button,
.nice-number input[type="number"]::-webkit-outer-spin-button, 
.nice-number input::-webkit-inner-spin-button,
.nice-number input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.nice-number button {
    padding: 0 10px 0 10px;
    width: 30px !important;
    height: 30px !important;
    font-size: 16px;
    line-height: 4px;
    font-weight: bold;
    border-radius: 0;
    vertical-align:10px;
    border: none;
}
.nice-number button {
    border: 1px solid #000;
}

.nice-number input, .nice-number input[type="number"] {
    width: 40px !important;
    height: 28px !important;
    padding: 0px 5px 0 5px !important;
    border-radius: 0;
    border: 1px solid;
}