Sass Range Input Styling (webkit)

range_input.scss

input[type=range]{
  -webkit-appearance: none;
  border: none;

  &::-webkit-slider-runnable-track {
    width: 250px;
    height: 2px;
    background: #CCC;
    border: none;
    border-radius: 1px;
  }
  &::-webkit-slider-thumb {
    -webkit-appearance: none;
    border: none;
    height: 16px;
    width: 16px;
    border-radius: 50%;
    background: green;
    margin-top: -7px;
  }
  &:focus {
    outline: none;

    &::-webkit-slider-runnable-track {
      background: white;
    }
  }
}