body {
  background-color: #111111;
  color: #ffffff;
  font-family: Segoe UI;
}
input[type=number]::-webkit-inner-spin-button, 
input[type=number]::-webkit-outer-spin-button { 
  -webkit-appearance: none; 
  margin: 0; 
}
input[type=number] {
    -moz-appearance:textfield; /* Firefox */
}