.preload { 
    display:none;
    width:100px;
    height: 100px;
    position: fixed;
    top: 50%;
    left: 50%;
}

.opacities {
    -ms-opacity: 0.5;
    opacity: 0.5;
}

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