Which web developer sandbox to choose (need coffeeScript, SASS)?

Question

Debugging

There is jsfiddle. Like it, but doesn't understand my style code: can only css, scss. And you need sass:

.range-wrapper
  display: none
  margin: 15px 0 10px 0
  padding: 0 220px
  position: relative
  input
    display: inline-block
    box-sizing: border-box
    vertical-align: middle
  input[type=range]
    width: 100%
    border-radius: 5px
    background: $input-border-color
    margin: 0
    outline: 0
    -webkit-appearance: none