.custom-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    cursor: pointer;
    margin-top: -7px;
}

.custom-range::-moz-range-thumb {
    width: 20px;
    height: 20px;
    cursor: pointer;
    margin-top: -7px;
}