.rangeslider,
.rangeslider__fill { float:left;
  background: #ddd;
  height: 8px;
  width: calc(100% - 330px);
  border-radius: 4px;
  
}

.rangeslider {
  position: relative;
  margin:18px 0;
}

.rangeslider__fill {
  background: #3c64ff;
  position: absolute;
  top: 0;
  border-radius: 4px;
}

.rangeslider__handle {
  background: white;
  cursor: pointer;
  display: inline-block;
  width: 24px;
  height: 24px;
  position: absolute;
  top: -8px;
  background: #3c64ff;
  border-radius: 50%;
 
}
.rangeslider__handle:after {
  content: "";
  display: block;
  width: 24px;
  height: 24px;
  margin: auto;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background: #3c64ff;
  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(255, 0, 255, 0.9);
  -moz-box-shadow: 0 0 8px rgba(255, 0, 255, 0.9);
  box-shadow: 0 0 8px rgba(255, 0, 255, 0.9);
}