body{display:flex;flex-direction:column;justify-content:center;align-items:center;background:linear-gradient(135deg,#e0eafc,#cfdef3);min-height:100vh;margin:0;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;color:#333}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}