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HTML

              
                <input type="range" id="volume" name="volume"
         min="0" max="2000">
              
            
!

CSS

              
                // https://css-tricks.com/styling-cross-browser-compatible-range-inputs-css/

input[type=range] {
  margin-top: 100px;
  -webkit-appearance: none; /* Hides the slider so that custom slider can be made */
  width: 800px; /* Specific width is required for Firefox. */
  pointer-events: none;
  background: transparent; /* Otherwise white in Chrome */
}

input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
}

input[type=range]:focus {
  outline: none; /* Removes the blue border. You should probably do some kind of focus styling for accessibility reasons though. */
}

input[type=range]::-ms-track {
  width: 100%;
  cursor: pointer;

  /* Hides the slider so custom styles can be added */
  background: transparent; 
  border-color: transparent;
  color: transparent;
}

/* Special styling for WebKit/Blink */
input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  border: 1px solid red;
  height: 50px;
  width: 100px;
  border-radius: 3px;
  background: #ffffff;
  cursor: pointer;
  margin-top: -14px; /* You need to specify a margin in Chrome, but in Firefox and IE it is automatic */
  box-shadow: 1px 1px 1px #000000, 0px 0px 1px #0d0d0d; /* Add cool effects to your sliders! */
  pointer-events: auto;
}

input[type=range]::-webkit-slider-thumb
  content:'hi'
  width: 300px
  height: 100px
  background: blue

/* All the same stuff for Firefox */
input[type=range]::-moz-range-thumb {
  box-shadow: 1px 1px 1px #000000, 0px 0px 1px #0d0d0d;
  border: 1px solid #000000;
  height: 36px;
  width: 16px;
  border-radius: 3px;
  background: #ffffff;
  cursor: pointer;
}

/* All the same stuff for IE */
input[type=range]::-ms-thumb {
  box-shadow: 1px 1px 1px #000000, 0px 0px 1px #0d0d0d;
  border: 1px solid #000000;
  height: 36px;
  width: 16px;
  border-radius: 3px;
  background: #ffffff;
  cursor: pointer;
}

input[type=range]::-webkit-slider-runnable-track {
  width: 50%;
  height: 34.4px;
  cursor: pointer;
  box-shadow: 1px 1px 1px #000000, 0px 0px 1px #0d0d0d;
  background: transparent;
  border-radius: 1.3px;
  border: 0.2px solid #010101;
}

// input[type=range]:focus::-webkit-slider-runnable-track {
//   background: red;
// }

input[type=range]::-moz-range-track {
  width: 100%;
  height: 8.4px;
  cursor: pointer;
  box-shadow: 1px 1px 1px #000000, 0px 0px 1px #0d0d0d;
  background: pink;
  border-radius: 1.3px;
  border: 0.2px solid #010101;
}

input[type=range]::-ms-track {
  width: 100%;
  height: 8.4px;
  cursor: pointer;
  background: red;
  border-color: transparent;
  border-width: 16px 0;
  color: transparent;
}
input[type=range]::-ms-fill-lower {
  background: #2a6495;
  border: 0.2px solid #010101;
  border-radius: 2.6px;
  box-shadow: 1px 1px 1px #000000, 0px 0px 1px #0d0d0d;
}
input[type=range]:focus::-ms-fill-lower {
  background: #3071a9;
}
input[type=range]::-ms-fill-upper {
  background: #3071a9;
  border: 0.2px solid #010101;
  border-radius: 2.6px;
  box-shadow: 1px 1px 1px #000000, 0px 0px 1px #0d0d0d;
}
input[type=range]:focus::-ms-fill-upper {
  background: #367ebd;
}

input[type=range]::-webkit-progress-value,
input[type=range]::-webkit-progress-inner-element
  background-color: seagreen
 
              
            
!

JS

              
                
              
            
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999px

Console