pm-controls/source/app/controls/components/slider/slider.css

ProModel Controls

.slider-layout {
    width: 100%;
    position: relative;
    height: 48px;
}

.slider-container {
    width: 100%;
    position: absolute;
    top: 23px;
    height: 2px;
}

.slider-track {
    position: absolute;
    left: 0;
    right: 0;
    height: 100%;
    background-color: rgba(0,0,0,0.38);
}

.slider-track-fill {
    position: absolute;
    left: 0;
    right: 0;
    height: 100%;
    width: 37.2549%;
    background-color: rgb(255,82,82);
}

.slider-thumb {
    position: absolute;
    top: 50%;
    -webkit-transform: translate3d(-50%,-50%,0);
    transform: translate3d(-50%,-50%,0);
    -webkit-transition: all .4s cubic-bezier(.25,.8,.25,1);
    transition: all .4s cubic-bezier(.25,.8,.25,1);
    -webkit-transition-property: left,right,bottom;
    transition-property: left,right,bottom;
}

.track-thumb {
    height: 20px;
    width: 20px;
    background-color: rgb(255,82,82);
    border-radius: 20px;
}