diff --git a/dist/rangeslider.css b/dist/rangeslider.css
index b1d4a58..4c8fa34 100644
--- a/dist/rangeslider.css
+++ b/dist/rangeslider.css
@@ -85,7 +85,7 @@
   -webkit-border-radius: 50%;
   border-radius: 50%;
 }
-.rangeslider__handle:active {
+.rangeslider__handle:active, .rangeslider--active .rangeslider__handle {
   background-image: url('data:image/svg+xml;base64,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');
   background-size: 100%;
   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)));
diff --git a/dist/rangeslider.js b/dist/rangeslider.js
index 2a12d5b..ba2cc75 100644
--- a/dist/rangeslider.js
+++ b/dist/rangeslider.js
@@ -39,6 +39,7 @@
             orientation: 'horizontal',
             rangeClass: 'rangeslider',
             disabledClass: 'rangeslider--disabled',
+            activeClass: 'rangeslider--active',
             horizontalClass: 'rangeslider--horizontal',
             verticalClass: 'rangeslider--vertical',
             fillClass: 'rangeslider__fill',
@@ -315,9 +316,14 @@
     };
 
     Plugin.prototype.handleDown = function(e) {
+        e.preventDefault();
         this.$document.on(this.moveEvent, this.handleMove);
         this.$document.on(this.endEvent, this.handleEnd);
 
+        // add active class because Firefox is ignoring
+        // the handle:active pseudo selector because of `e.preventDefault();`
+        this.$range.addClass(this.options.activeClass);
+
         // If we click on the handle don't set the new position
         if ((' ' + e.target.className + ' ').replace(/[\n\t]/g, ' ').indexOf(this.options.handleClass) > -1) {
             return;
@@ -347,6 +353,8 @@
         this.$document.off(this.moveEvent, this.handleMove);
         this.$document.off(this.endEvent, this.handleEnd);
 
+        this.$range.removeClass(this.options.activeClass);
+
         // Ok we're done fire the change event
         this.$element.trigger('change', { origin: this.identifier });
 
diff --git a/dist/rangeslider.min.js b/dist/rangeslider.min.js
index 0ee00b8..80fbd6a 100644
--- a/dist/rangeslider.min.js
+++ b/dist/rangeslider.min.js
@@ -1,2 +1,2 @@
 /*! rangeslider.js - v2.2.2 | (c) 2016 @andreruffert | MIT license | https://github.com/andreruffert/rangeslider.js */
-!function(a){"use strict";"function"==typeof define&&define.amd?define(["jquery"],a):"object"==typeof exports?module.exports=a(require("jquery")):a(jQuery)}(function(a){"use strict";function b(){var a=document.createElement("input");return a.setAttribute("type","range"),"text"!==a.type}function c(a,b){var c=Array.prototype.slice.call(arguments,2);return setTimeout(function(){return a.apply(null,c)},b)}function d(a,b){return b=b||100,function(){if(!a.debouncing){var c=Array.prototype.slice.apply(arguments);a.lastReturnVal=a.apply(window,c),a.debouncing=!0}return clearTimeout(a.debounceTimeout),a.debounceTimeout=setTimeout(function(){a.debouncing=!1},b),a.lastReturnVal}}function e(a){return a&&(0===a.offsetWidth||0===a.offsetHeight||a.open===!1)}function f(a){for(var b=[],c=a.parentNode;e(c);)b.push(c),c=c.parentNode;return b}function g(a,b){function c(a){"undefined"!=typeof a.open&&(a.open=!a.open)}var d=f(a),e=d.length,g=[],h=a[b];if(e){for(var i=0;i<e;i++)g[i]=d[i].style.cssText,d[i].style.setProperty?d[i].style.setProperty("display","block","important"):d[i].style.cssText+=";display: block !important",d[i].style.height="0",d[i].style.overflow="hidden",d[i].style.visibility="hidden",c(d[i]);h=a[b];for(var j=0;j<e;j++)d[j].style.cssText=g[j],c(d[j])}return h}function h(a,b){var c=parseFloat(a);return Number.isNaN(c)?b:c}function i(a){return a.charAt(0).toUpperCase()+a.substr(1)}function j(b,e){if(this.$window=a(window),this.$document=a(document),this.$element=a(b),this.options=a.extend({},n,e),this.polyfill=this.options.polyfill,this.orientation=this.$element[0].getAttribute("data-orientation")||this.options.orientation,this.onInit=this.options.onInit,this.onSlide=this.options.onSlide,this.onSlideEnd=this.options.onSlideEnd,this.DIMENSION=o.orientation[this.orientation].dimension,this.DIRECTION=o.orientation[this.orientation].direction,this.DIRECTION_STYLE=o.orientation[this.orientation].directionStyle,this.COORDINATE=o.orientation[this.orientation].coordinate,this.polyfill&&m)return!1;this.identifier="js-"+k+"-"+l++,this.startEvent=this.options.startEvent.join("."+this.identifier+" ")+"."+this.identifier,this.moveEvent=this.options.moveEvent.join("."+this.identifier+" ")+"."+this.identifier,this.endEvent=this.options.endEvent.join("."+this.identifier+" ")+"."+this.identifier,this.toFixed=(this.step+"").replace(".","").length-1,this.$fill=a('<div class="'+this.options.fillClass+'" />'),this.$handle=a('<div class="'+this.options.handleClass+'" />'),this.$range=a('<div class="'+this.options.rangeClass+" "+this.options[this.orientation+"Class"]+'" id="'+this.identifier+'" />').insertAfter(this.$element).prepend(this.$fill,this.$handle),this.$element.css({position:"absolute",width:"1px",height:"1px",overflow:"hidden",opacity:"0"}),this.handleDown=a.proxy(this.handleDown,this),this.handleMove=a.proxy(this.handleMove,this),this.handleEnd=a.proxy(this.handleEnd,this),this.init();var f=this;this.$window.on("resize."+this.identifier,d(function(){c(function(){f.update(!1,!1)},300)},20)),this.$document.on(this.startEvent,"#"+this.identifier+":not(."+this.options.disabledClass+")",this.handleDown),this.$element.on("change."+this.identifier,function(a,b){if(!b||b.origin!==f.identifier){var c=a.target.value,d=f.getPositionFromValue(c);f.setPosition(d)}})}Number.isNaN=Number.isNaN||function(a){return"number"==typeof a&&a!==a};var k="rangeslider",l=0,m=b(),n={polyfill:!0,orientation:"horizontal",rangeClass:"rangeslider",disabledClass:"rangeslider--disabled",horizontalClass:"rangeslider--horizontal",verticalClass:"rangeslider--vertical",fillClass:"rangeslider__fill",handleClass:"rangeslider__handle",startEvent:["mousedown","touchstart","pointerdown"],moveEvent:["mousemove","touchmove","pointermove"],endEvent:["mouseup","touchend","pointerup"]},o={orientation:{horizontal:{dimension:"width",direction:"left",directionStyle:"left",coordinate:"x"},vertical:{dimension:"height",direction:"top",directionStyle:"bottom",coordinate:"y"}}};return j.prototype.init=function(){this.update(!0,!1),this.onInit&&"function"==typeof this.onInit&&this.onInit()},j.prototype.update=function(a,b){a=a||!1,a&&(this.min=h(this.$element[0].getAttribute("min"),0),this.max=h(this.$element[0].getAttribute("max"),100),this.value=h(this.$element[0].value,Math.round(this.min+(this.max-this.min)/2)),this.step=h(this.$element[0].getAttribute("step"),1)),this.handleDimension=g(this.$handle[0],"offset"+i(this.DIMENSION)),this.rangeDimension=g(this.$range[0],"offset"+i(this.DIMENSION)),this.maxHandlePos=this.rangeDimension-this.handleDimension,this.grabPos=this.handleDimension/2,this.position=this.getPositionFromValue(this.value),this.$element[0].disabled?this.$range.addClass(this.options.disabledClass):this.$range.removeClass(this.options.disabledClass),this.setPosition(this.position,b)},j.prototype.handleDown=function(a){if(this.$document.on(this.moveEvent,this.handleMove),this.$document.on(this.endEvent,this.handleEnd),!((" "+a.target.className+" ").replace(/[\n\t]/g," ").indexOf(this.options.handleClass)>-1)){var b=this.getRelativePosition(a),c=this.$range[0].getBoundingClientRect()[this.DIRECTION],d=this.getPositionFromNode(this.$handle[0])-c,e="vertical"===this.orientation?this.maxHandlePos-(b-this.grabPos):b-this.grabPos;this.setPosition(e),b>=d&&b<d+this.handleDimension&&(this.grabPos=b-d)}},j.prototype.handleMove=function(a){a.preventDefault();var b=this.getRelativePosition(a),c="vertical"===this.orientation?this.maxHandlePos-(b-this.grabPos):b-this.grabPos;this.setPosition(c)},j.prototype.handleEnd=function(a){a.preventDefault(),this.$document.off(this.moveEvent,this.handleMove),this.$document.off(this.endEvent,this.handleEnd),this.$element.trigger("change",{origin:this.identifier}),this.onSlideEnd&&"function"==typeof this.onSlideEnd&&this.onSlideEnd(this.position,this.value)},j.prototype.cap=function(a,b,c){return a<b?b:a>c?c:a},j.prototype.setPosition=function(a,b){var c,d;void 0===b&&(b=!0),c=this.getValueFromPosition(this.cap(a,0,this.maxHandlePos)),d=this.getPositionFromValue(c),this.$fill[0].style[this.DIMENSION]=d+this.grabPos+"px",this.$handle[0].style[this.DIRECTION_STYLE]=d+"px",this.setValue(c),this.position=d,this.value=c,b&&this.onSlide&&"function"==typeof this.onSlide&&this.onSlide(d,c)},j.prototype.getPositionFromNode=function(a){for(var b=0;null!==a;)b+=a.offsetLeft,a=a.offsetParent;return b},j.prototype.getRelativePosition=function(a){var b=i(this.COORDINATE),c=this.$range[0].getBoundingClientRect()[this.DIRECTION],d=0;return"undefined"!=typeof a.originalEvent["client"+b]?d=a.originalEvent["client"+b]:a.originalEvent.touches&&a.originalEvent.touches[0]&&"undefined"!=typeof a.originalEvent.touches[0]["client"+b]?d=a.originalEvent.touches[0]["client"+b]:a.currentPoint&&"undefined"!=typeof a.currentPoint[this.COORDINATE]&&(d=a.currentPoint[this.COORDINATE]),d-c},j.prototype.getPositionFromValue=function(a){var b,c;return b=(a-this.min)/(this.max-this.min),c=Number.isNaN(b)?0:b*this.maxHandlePos},j.prototype.getValueFromPosition=function(a){var b,c;return b=a/(this.maxHandlePos||1),c=this.step*Math.round(b*(this.max-this.min)/this.step)+this.min,Number(c.toFixed(this.toFixed))},j.prototype.setValue=function(a){a===this.value&&""!==this.$element[0].value||this.$element.val(a).trigger("input",{origin:this.identifier})},j.prototype.destroy=function(){this.$document.off("."+this.identifier),this.$window.off("."+this.identifier),this.$element.off("."+this.identifier).removeAttr("style").removeData("plugin_"+k),this.$range&&this.$range.length&&this.$range[0].parentNode.removeChild(this.$range[0])},a.fn[k]=function(b){var c=Array.prototype.slice.call(arguments,1);return this.each(function(){var d=a(this),e=d.data("plugin_"+k);e||d.data("plugin_"+k,e=new j(this,b)),"string"==typeof b&&e[b].apply(e,c)})},"rangeslider.js is available in jQuery context e.g $(selector).rangeslider(options);"});
\ No newline at end of file
+!function(a){"use strict";"function"==typeof define&&define.amd?define(["jquery"],a):"object"==typeof exports?module.exports=a(require("jquery")):a(jQuery)}(function(a){"use strict";function b(){var a=document.createElement("input");return a.setAttribute("type","range"),"text"!==a.type}function c(a,b){var c=Array.prototype.slice.call(arguments,2);return setTimeout(function(){return a.apply(null,c)},b)}function d(a,b){return b=b||100,function(){if(!a.debouncing){var c=Array.prototype.slice.apply(arguments);a.lastReturnVal=a.apply(window,c),a.debouncing=!0}return clearTimeout(a.debounceTimeout),a.debounceTimeout=setTimeout(function(){a.debouncing=!1},b),a.lastReturnVal}}function e(a){return a&&(0===a.offsetWidth||0===a.offsetHeight||a.open===!1)}function f(a){for(var b=[],c=a.parentNode;e(c);)b.push(c),c=c.parentNode;return b}function g(a,b){function c(a){"undefined"!=typeof a.open&&(a.open=!a.open)}var d=f(a),e=d.length,g=[],h=a[b];if(e){for(var i=0;i<e;i++)g[i]=d[i].style.cssText,d[i].style.setProperty?d[i].style.setProperty("display","block","important"):d[i].style.cssText+=";display: block !important",d[i].style.height="0",d[i].style.overflow="hidden",d[i].style.visibility="hidden",c(d[i]);h=a[b];for(var j=0;j<e;j++)d[j].style.cssText=g[j],c(d[j])}return h}function h(a,b){var c=parseFloat(a);return Number.isNaN(c)?b:c}function i(a){return a.charAt(0).toUpperCase()+a.substr(1)}function j(b,e){if(this.$window=a(window),this.$document=a(document),this.$element=a(b),this.options=a.extend({},n,e),this.polyfill=this.options.polyfill,this.orientation=this.$element[0].getAttribute("data-orientation")||this.options.orientation,this.onInit=this.options.onInit,this.onSlide=this.options.onSlide,this.onSlideEnd=this.options.onSlideEnd,this.DIMENSION=o.orientation[this.orientation].dimension,this.DIRECTION=o.orientation[this.orientation].direction,this.DIRECTION_STYLE=o.orientation[this.orientation].directionStyle,this.COORDINATE=o.orientation[this.orientation].coordinate,this.polyfill&&m)return!1;this.identifier="js-"+k+"-"+l++,this.startEvent=this.options.startEvent.join("."+this.identifier+" ")+"."+this.identifier,this.moveEvent=this.options.moveEvent.join("."+this.identifier+" ")+"."+this.identifier,this.endEvent=this.options.endEvent.join("."+this.identifier+" ")+"."+this.identifier,this.toFixed=(this.step+"").replace(".","").length-1,this.$fill=a('<div class="'+this.options.fillClass+'" />'),this.$handle=a('<div class="'+this.options.handleClass+'" />'),this.$range=a('<div class="'+this.options.rangeClass+" "+this.options[this.orientation+"Class"]+'" id="'+this.identifier+'" />').insertAfter(this.$element).prepend(this.$fill,this.$handle),this.$element.css({position:"absolute",width:"1px",height:"1px",overflow:"hidden",opacity:"0"}),this.handleDown=a.proxy(this.handleDown,this),this.handleMove=a.proxy(this.handleMove,this),this.handleEnd=a.proxy(this.handleEnd,this),this.init();var f=this;this.$window.on("resize."+this.identifier,d(function(){c(function(){f.update(!1,!1)},300)},20)),this.$document.on(this.startEvent,"#"+this.identifier+":not(."+this.options.disabledClass+")",this.handleDown),this.$element.on("change."+this.identifier,function(a,b){if(!b||b.origin!==f.identifier){var c=a.target.value,d=f.getPositionFromValue(c);f.setPosition(d)}})}Number.isNaN=Number.isNaN||function(a){return"number"==typeof a&&a!==a};var k="rangeslider",l=0,m=b(),n={polyfill:!0,orientation:"horizontal",rangeClass:"rangeslider",disabledClass:"rangeslider--disabled",activeClass:"rangeslider--active",horizontalClass:"rangeslider--horizontal",verticalClass:"rangeslider--vertical",fillClass:"rangeslider__fill",handleClass:"rangeslider__handle",startEvent:["mousedown","touchstart","pointerdown"],moveEvent:["mousemove","touchmove","pointermove"],endEvent:["mouseup","touchend","pointerup"]},o={orientation:{horizontal:{dimension:"width",direction:"left",directionStyle:"left",coordinate:"x"},vertical:{dimension:"height",direction:"top",directionStyle:"bottom",coordinate:"y"}}};return j.prototype.init=function(){this.update(!0,!1),this.onInit&&"function"==typeof this.onInit&&this.onInit()},j.prototype.update=function(a,b){a=a||!1,a&&(this.min=h(this.$element[0].getAttribute("min"),0),this.max=h(this.$element[0].getAttribute("max"),100),this.value=h(this.$element[0].value,Math.round(this.min+(this.max-this.min)/2)),this.step=h(this.$element[0].getAttribute("step"),1)),this.handleDimension=g(this.$handle[0],"offset"+i(this.DIMENSION)),this.rangeDimension=g(this.$range[0],"offset"+i(this.DIMENSION)),this.maxHandlePos=this.rangeDimension-this.handleDimension,this.grabPos=this.handleDimension/2,this.position=this.getPositionFromValue(this.value),this.$element[0].disabled?this.$range.addClass(this.options.disabledClass):this.$range.removeClass(this.options.disabledClass),this.setPosition(this.position,b)},j.prototype.handleDown=function(a){if(a.preventDefault(),this.$document.on(this.moveEvent,this.handleMove),this.$document.on(this.endEvent,this.handleEnd),this.$range.addClass(this.options.activeClass),!((" "+a.target.className+" ").replace(/[\n\t]/g," ").indexOf(this.options.handleClass)>-1)){var b=this.getRelativePosition(a),c=this.$range[0].getBoundingClientRect()[this.DIRECTION],d=this.getPositionFromNode(this.$handle[0])-c,e="vertical"===this.orientation?this.maxHandlePos-(b-this.grabPos):b-this.grabPos;this.setPosition(e),b>=d&&b<d+this.handleDimension&&(this.grabPos=b-d)}},j.prototype.handleMove=function(a){a.preventDefault();var b=this.getRelativePosition(a),c="vertical"===this.orientation?this.maxHandlePos-(b-this.grabPos):b-this.grabPos;this.setPosition(c)},j.prototype.handleEnd=function(a){a.preventDefault(),this.$document.off(this.moveEvent,this.handleMove),this.$document.off(this.endEvent,this.handleEnd),this.$range.removeClass(this.options.activeClass),this.$element.trigger("change",{origin:this.identifier}),this.onSlideEnd&&"function"==typeof this.onSlideEnd&&this.onSlideEnd(this.position,this.value)},j.prototype.cap=function(a,b,c){return a<b?b:a>c?c:a},j.prototype.setPosition=function(a,b){var c,d;void 0===b&&(b=!0),c=this.getValueFromPosition(this.cap(a,0,this.maxHandlePos)),d=this.getPositionFromValue(c),this.$fill[0].style[this.DIMENSION]=d+this.grabPos+"px",this.$handle[0].style[this.DIRECTION_STYLE]=d+"px",this.setValue(c),this.position=d,this.value=c,b&&this.onSlide&&"function"==typeof this.onSlide&&this.onSlide(d,c)},j.prototype.getPositionFromNode=function(a){for(var b=0;null!==a;)b+=a.offsetLeft,a=a.offsetParent;return b},j.prototype.getRelativePosition=function(a){var b=i(this.COORDINATE),c=this.$range[0].getBoundingClientRect()[this.DIRECTION],d=0;return"undefined"!=typeof a.originalEvent["client"+b]?d=a.originalEvent["client"+b]:a.originalEvent.touches&&a.originalEvent.touches[0]&&"undefined"!=typeof a.originalEvent.touches[0]["client"+b]?d=a.originalEvent.touches[0]["client"+b]:a.currentPoint&&"undefined"!=typeof a.currentPoint[this.COORDINATE]&&(d=a.currentPoint[this.COORDINATE]),d-c},j.prototype.getPositionFromValue=function(a){var b,c;return b=(a-this.min)/(this.max-this.min),c=Number.isNaN(b)?0:b*this.maxHandlePos},j.prototype.getValueFromPosition=function(a){var b,c;return b=a/(this.maxHandlePos||1),c=this.step*Math.round(b*(this.max-this.min)/this.step)+this.min,Number(c.toFixed(this.toFixed))},j.prototype.setValue=function(a){a===this.value&&""!==this.$element[0].value||this.$element.val(a).trigger("input",{origin:this.identifier})},j.prototype.destroy=function(){this.$document.off("."+this.identifier),this.$window.off("."+this.identifier),this.$element.off("."+this.identifier).removeAttr("style").removeData("plugin_"+k),this.$range&&this.$range.length&&this.$range[0].parentNode.removeChild(this.$range[0])},a.fn[k]=function(b){var c=Array.prototype.slice.call(arguments,1);return this.each(function(){var d=a(this),e=d.data("plugin_"+k);e||d.data("plugin_"+k,e=new j(this,b)),"string"==typeof b&&e[b].apply(e,c)})},"rangeslider.js is available in jQuery context e.g $(selector).rangeslider(options);"});
\ No newline at end of file
diff --git a/src/rangeslider.js b/src/rangeslider.js
index d71a1c7..4f14624 100644
--- a/src/rangeslider.js
+++ b/src/rangeslider.js
@@ -38,6 +38,7 @@
             orientation: 'horizontal',
             rangeClass: 'rangeslider',
             disabledClass: 'rangeslider--disabled',
+            activeClass: 'rangeslider--active',
             horizontalClass: 'rangeslider--horizontal',
             verticalClass: 'rangeslider--vertical',
             fillClass: 'rangeslider__fill',
@@ -314,9 +315,14 @@
     };
 
     Plugin.prototype.handleDown = function(e) {
+        e.preventDefault();
         this.$document.on(this.moveEvent, this.handleMove);
         this.$document.on(this.endEvent, this.handleEnd);
 
+        // add active class because Firefox is ignoring
+        // the handle:active pseudo selector because of `e.preventDefault();`
+        this.$range.addClass(this.options.activeClass);
+
         // If we click on the handle don't set the new position
         if ((' ' + e.target.className + ' ').replace(/[\n\t]/g, ' ').indexOf(this.options.handleClass) > -1) {
             return;
@@ -346,6 +352,8 @@
         this.$document.off(this.moveEvent, this.handleMove);
         this.$document.off(this.endEvent, this.handleEnd);
 
+        this.$range.removeClass(this.options.activeClass);
+
         // Ok we're done fire the change event
         this.$element.trigger('change', { origin: this.identifier });
 
diff --git a/src/rangeslider.scss b/src/rangeslider.scss
index 96a939d..365faea 100644
--- a/src/rangeslider.scss
+++ b/src/rangeslider.scss
@@ -4,6 +4,7 @@ $rangeslider:               ".rangeslider";
 $rangeslider--horizontal:   ".rangeslider--horizontal";
 $rangeslider--vertical:     ".rangeslider--vertical";
 $rangeslider--disabled:     ".rangeslider--disabled";
+$rangeslider--active:       ".rangeslider--active";
 $rangeslider__fill:         ".rangeslider__fill";
 $rangeslider__handle:       ".rangeslider__handle";
 
@@ -76,7 +77,8 @@ $rangeslider__handle:       ".rangeslider__handle";
         @include border-radius(50%);
     }
 
-    &:active {
+    &:active,
+    #{$rangeslider--active} & {
         @include background-image(linear-gradient(rgba(black, .10), rgba(black, .12)));
     }