.stepper {display: inline-block;}
.stepper input {
    font-size: 2em;
    height: 2em;
    -webkit-border-radius:3px 0 0 3px;
    -moz-border-radius:3px 0 0 3px;
    -o-border-radius:3px 0 0 3px;
    border-radius:3px 0 0 3px;
}
.stepper input::-webkit-inner-spin-button,
.stepper input::-webkit-outer-spin-button { -webkit-appearance:none; margin:0; }
.stepper .stepper-arrow {
    padding: 8px;
    font-size: 2em;
    font-weight: bold;
    background-color:#e0e0e0;
    cursor:pointer;
    display:inline-block;
    height:100%;
    -webkit-transition:background-color.4s;
    -moz-transition:background-color.4s;
    -ms-transition:background-color.4s;
    -o-transition:background-color.4s;
    transition:background-color.4s;
}
.stepper .stepper-arrow:hover { color:black; }