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CSS

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HTML 

              
                
<div class="container">
  <form class="range">
    <div class="form-group range__slider">
      <input type="range" step="500">
    </div><!--/form-group-->
    <div class="form-group range__value">
      <label>Loan Amount</label>
      <span></span>            
    </div><!--/form-group-->
  </form>
</div><!--/container-->
!

CSS 

              
                 body {
    background: #fafafa ;
    font-family: Helvetica, Arial;
}

.container {
  width: 100vw;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.range {
  display: flex;
  width: 600px;
}

.range__slider {
  width: 45%;
}

.range__value {
  width: 35%;
  margin-left: 45px;    
  text-align: center;
  border-left: #e6e4e4 1px solid;
}

.form-group {
  display: flex;
  flex-direction: column; 
  justify-content: center;
}

.form-group label {
  text-transform: uppercase;
  font-size: .7rem;
  color: #222;
  margin-bottom: 5px;
}

.form-group span {
  font-size: 2rem;
  font-weight: 600;
  color: #3c3b3b;
}

.range__slider label {
  margin-bottom: 10px;
}

.range__slider [type="range"] {
  width: 100%;
  -webkit-appearance: none;
  height: 13px;
  border-radius: 6px;
  background: #f1f1f1;
  outline: none;
  padding: 0;
  margin: 0;
}

/* custom thumb */
.range__slider [type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 25px;
  height: 25px;
  border-radius: 50%;
  background: #7a00ff;
  border: #f9ca24 5px solid;
  cursor: pointer;
  -webkit-transition: background .15s ease-in-out;
  transition: background .15s ease-in-out;
}

.range__slider [type="range"]::-webkit-slider-thumb:hover {
  background: #f0932b;
}

.range__slider [type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border: 0;
  border-radius: 50%;
  background: #f0932b;
  border: #f9ca24 5px solid; cursor: pointer;
  -webkit-transition: background .15s ease-in-out;
  transition: background .15s ease-in-out;
}

.range__slider [type="range"]::-moz-range-thumb:hover {
  background: #f9ca24;
}

/* remove border */
input::-moz-focus-inner, input::-moz-focus-outer {
  border: 0;
}
!

JS 

              
                
class Slider {
  constructor (rangeElement, valueElement, options) {
    this.rangeElement = rangeElement
    this.valueElement = valueElement
    this.options = options

    // Attach a listener to "change" event
    this.rangeElement.addEventListener('input', this.updateSlider.bind(this))
  }

  // Initialize the slider
  init() {
    this.rangeElement.setAttribute('min', options.min)
    this.rangeElement.setAttribute('max', options.max)
    this.rangeElement.value = options.cur

    this.updateSlider()
  }

  // Format the money
  asMoney(value) {
    return '$' + parseFloat(value)
      .toLocaleString('en-US', { maximumFractionDigits: 2 })
  }

  generateBackground(rangeElement) {   
    if (this.rangeElement.value === this.options.min) {
      return
    }

    let percentage =  (this.rangeElement.value - this.options.min) / (this.options.max - this.options.min) * 100
    return 'background: linear-gradient(to right, #50299c, #7a00ff ' + percentage + '%, #d3edff ' + percentage + '%, #dee1e2 100%)'
  }

  updateSlider (newValue) {
    this.valueElement.innerHTML = this.asMoney(this.rangeElement.value)
    this.rangeElement.style = this.generateBackground(this.rangeElement.value)
  }
}

let rangeElement = document.querySelector('.range [type="range"]')
let valueElement = document.querySelector('.range .range__value span') 

let options = {
  min: 2000,
  max: 75000,
  cur: 37500
}

if (rangeElement) {
  let slider = new Slider(rangeElement, valueElement, options)

  slider.init()
}
!
999px

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