.rangeSlider,
.rangeSlider__fill {
    background: #7f8c8d;
    display: block;
    height: 20px;
    width: 100%;
    -webkit-box-shadow: inset 0px 1px 3px rgba(0, 0, 0, 0.3);
    -moz-box-shadow: inset 0px 1px 3px rgba(0, 0, 0, 0.3);
    box-shadow: inset 0px 1px 3px rgba(0, 0, 0, 0.3);
    -webkit-border-radius: 10px;
    -moz-border-radius: 10px;
    -ms-border-radius: 10px;
    -o-border-radius: 10px;
    border-radius: 10px;
}

.rangeSlider {
    position: relative;
}

.rangeSlider--disabled {
    filter: progid:DXImageTransform.Microsoft.Alpha(Opacity=40);
    opacity: 0.4;
}

.rangeSlider__fill {
    background: #337ab7;
    position: absolute;
    top: 0;
    z-index: 2;
}

.rangeSlider__handle {
    background: white;
    border: 1px solid #ccc;
    cursor: pointer;
    display: inline-block;
    width: 40px;
    height: 40px;
    position: absolute;
    top: -10px;
    z-index: 3;
    background-image: -webkit-gradient(linear, 50% 0%, 50% 100%, color-stop(0%, rgba(255, 255, 255, 0)), color-stop(100%, rgba(0, 0, 0, 0.1)));
    background-image: -webkit-linear-gradient(rgba(255, 255, 255, 0), rgba(0, 0, 0, 0.1));
    background-image: -moz-linear-gradient(rgba(255, 255, 255, 0), rgba(0, 0, 0, 0.1));
    background-image: -o-linear-gradient(rgba(255, 255, 255, 0), rgba(0, 0, 0, 0.1));
    background-image: linear-gradient(rgba(255, 255, 255, 0), rgba(0, 0, 0, 0.1));
    -webkit-box-shadow: 0 0 8px rgba(0, 0, 0, 0.3);
    -moz-box-shadow: 0 0 8px rgba(0, 0, 0, 0.3);
    box-shadow: 0 0 8px rgba(0, 0, 0, 0.3);
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    -ms-border-radius: 50%;
    -o-border-radius: 50%;
    border-radius: 50%;
}

.rangeSlider__handle:after {
    content: "";
    display: block;
    width: 18px;
    height: 18px;
    margin: auto;
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background-image: -webkit-gradient(linear, 50% 0%, 50% 100%, color-stop(0%, rgba(0, 0, 0, 0.13)), color-stop(100%, rgba(255, 255, 255, 0)));
    background-image: -webkit-linear-gradient(rgba(0, 0, 0, 0.13), rgba(255, 255, 255, 0));
    background-image: -moz-linear-gradient(rgba(0, 0, 0, 0.13), rgba(255, 255, 255, 0));
    background-image: -o-linear-gradient(rgba(0, 0, 0, 0.13), rgba(255, 255, 255, 0));
    background-image: linear-gradient(rgba(0, 0, 0, 0.13), rgba(255, 255, 255, 0));
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    -ms-border-radius: 50%;
    -o-border-radius: 50%;
    border-radius: 50%;
}

.rangeSlider__handle:active {
    background-image: -webkit-gradient(linear, 50% 0%, 50% 100%, color-stop(0%, rgba(0, 0, 0, 0.1)), color-stop(100%, rgba(0, 0, 0, 0.12)));
    background-image: -webkit-linear-gradient(rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.12));
    background-image: -moz-linear-gradient(rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.12));
    background-image: -o-linear-gradient(rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.12));
    background-image: linear-gradient(rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.12));
}

input[type="range"]:focus + .rangeSlider .rangeSlider__handle {
    -webkit-box-shadow: 0 0 8px rgba(142, 68, 173, 0.9);
    -moz-box-shadow: 0 0 8px rgba(142, 68, 173, 0.9);
    box-shadow: 0 0 8px rgba(142, 68, 173, 0.9);
}

.rangeSlider__buffer {
    z-index: 1;
    position: absolute;
    top: 3px;
    height: 14px;
    background: #2c3e50;
    border-radius: 10px;
}