I did but still looked like crap on smaller screen sizes. So I added this:
.woocommerce div.quantity, .woocommerce div.buttons_added{ float:left;}
input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button {
-webkit-appearance: none;
margin: 0;
}
input.input-text qty text{
text-align:center !important;
}