input[type="range"].color-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 12px;
    border-radius: 6px;
    outline: none;
    border: 1px solid #ccc;
}

input[type="range"].color-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #ffffff;
    border: 2px solid #222;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

input[type="range"].color-slider::-moz-range-thumb {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #ffffff;
    border: 2px solid #222;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}