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HTML 

              
                <div class="content">
  <div class="section">
    <h2>Default Buttons</h2>
    <div class="section-content">
      <button>Hello</button>
      <button class="primary">Click me</button>
      <button class="accent focus-me">Focused</button>
      <button>
        <i class="material-icons">local_pizza</i>
        Gimme pizza
      </button>
      <a class="md-button success" href="https://material.io/guidelines/components/buttons.html#buttons-button-types" target="_blank">I'm a link</a>
      <button disabled>Disabled</button>
    </div>
  </div>
  <div class="section">
    <h2>Stroke Buttons</h2>
    <div class="section-content">
      <button class="md-stroke">Many buttons</button>
      <button class="primary md-stroke">wow</button>
      <button class="accent md-stroke">much ripple</button>
      <button class="md-stroke">
        <i class="material-icons">cake</i>
        Gimme cake
      </button>
      <a class="md-button md-stroke success" href="https://material.io/guidelines/components/buttons.html#buttons-button-types" target="_blank">very goog</a>
      <button class="md-stroke" disabled>no click 4 u</button>
    </div>
  </div>
  <div class="section">
    <h2>Icon Buttons</h2>
    <div class="section-content">
      <button class="md-icon-button">
  <i class="material-icons">cake</i>
</button>
      <button class="md-icon-button primary">
  <i class="material-icons">favorite</i>
</button>
      <button class="md-icon-button accent">
  <i class="material-icons">local_pizza</i>
</button>
       <button class="md-icon-button accent" disabled>
  <i class="material-icons">accessible</i>
</button>
    </div>
  </div>
  <div class="section">
    <h2>Raised Buttons</h2>
    <div class="section-content">
      <div>
        <button class="raised">Good heavens</button>
        <button class="raised primary">Hey there</button>
        <button class="raised accent">Click for hugs</button>
        <button class="raised">
        <i class="material-icons">favorite_border</i>
        Love me
      </button>
        <button class="raised" disabled>Aw shucks</button>
      </div>
      <div>
        <button class="md-icon-button raised">
  <i class="material-icons">cake</i>
  </button>
        <button class="md-icon-button primary raised">
    <i class="material-icons">favorite</i>
  </button>
        <button class="md-icon-button accent raised">
    <i class="material-icons">local_pizza</i>
  </button>
        <button class="md-icon-button accent raised" disabled>
    <i class="material-icons">android</i>
  </button>
      </div>
    </div>
  </div>
  <div class="section">
    <h2>FAB Buttons</h2>
    <div class="section-content">
      <button class="md-fab">
  <i class="material-icons">settings</i>
</button>
            <button class="md-fab primary">
  <i class="material-icons">close</i>
</button>
            <button class="md-fab accent">
  <i class="material-icons">pets</i>
</button>
      <button class="md-fab accent" disabled>
  <i class="material-icons">local_bar</i>
</button>
    </div>
  </div>
  <div class="section">
    <h2>Disable Button Ripple</h2>
    <div class="section-content">
      <button class="accent" data-no-ripple="true">Aw no fun</button>
    </div>
  </div>
  <div class="section">
    <h2>Add Ripples to Anything!</h2>
    <div class="section-content">
      <div class="ripple-image">
        <img src="//images-na.ssl-images-amazon.com/images/I/81-yKbVND-L.png" />
      </div>
    </div>
  </div>
  <div class="section">
    <h2>Custom Ripple Color</h2>
    <div class="section-content">
      <button class="party-button raised" data-ripple-color="#E91E63">Party time</button>
    </div>
  </div>
</div>
!

CSS 

              
                /**
* Variables
**/
@button-raised-default__background-color: @light-color;
@button__border-radius: 2px;
@button__font-family: "Roboto Slab", "Roboto", "Roboto Mono", "Roboto",
  "sans-serif";
@button__font-size: 14px;
@button__font-weight: 500;
@button__line-height: 36px;
@button__margin: 8px;
@button-icon__font-size: 24px;
@icon-font__line-height: 40px;
@swift-ease-out: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
@transition-timing: cubic-bezier(0.25, 0.8, 0.25, 1);
@whiteframe-shadow-2dp: 0px 1px 5px 0px rgba(0, 0, 0, 0.2),
  0px 2px 2px 0px rgba(0, 0, 0, 0.14), 0px 3px 1px -2px rgba(0, 0, 0, 0.12);
@whiteframe-shadow-4dp: 0px 2px 4px -1px rgba(0, 0, 0, 0.2),
  0px 4px 5px 0px rgba(0, 0, 0, 0.14), 0px 1px 10px 0px rgba(0, 0, 0, 0.12);

/** Colors **/
// Font Dark
@primary-dark-color: rgba(0, 0, 0, 0.87);
@secondary-dark-color: rgba(0, 0, 0, 0.54);
@disabled-dark-color: rgba(0, 0, 0, 0.38);
@inactive-dark-color: rgba(0, 0, 0, 0.24);
@divider-dark-color: rgba(0, 0, 0, 0.12);
// Font Light
@primary-light-color: rgb(255, 255, 255);
@secondary-light-color: rgba(255, 255, 255, 0.7);
@disabled-light-color: rgba(255, 255, 255, 0.5);
@inactive-light-color: rgba(255, 255, 255, 0.24);
@divider-light-color: rgba(255, 255, 255, 0.12);
// Theme
@primary-color: #673ab7;
@secondary-color: #d32f2f;
@accent-color: #2979ff;
@light-color: #fafafa;
@base-color: #f5f5f5;
@dark-color: #424242;
@success-color: #00c853;
@warn-color: #ff6d00;
@error-color: #d50000;
//Social Media
@facebook-blue: #3b5999;
@twitter-blue: #55acee;
@linkedin-blue: #0077b5;
@tumblr-blue-grey: #34465d;
@googleplus-red: #dd4b39;
@pinterest-red: #bd081c;
@youtube-red: #cd201f;
@reddit-orange: #ff5700;
@whatsapp-green: #25d366;
@instagram-pink: #e4405f;
@behance-black: #131418;
@snapchat-yellow: #fffc00;

// For mixin use (i.e. generating button themes)
// css-class-name, color
@theme-colors: primary @primary-color, secondary @secondary-color,
  accent @accent-color, success @success-color, error @error-color,
  behance-black @behance-black, facebook-blue @facebook-blue,
  googleplus-red @googleplus-red, snapchat-yellow @snapchat-yellow,
  reddit-orange @reddit-orange, twitter-blue @twitter-blue;

/**
* Styles
**/

/////////////////////////////

// Button Styles
button,
a.md-button {
  .button-base-styles();

  &:not([disabled]) {
    &.raised {
      box-shadow: @whiteframe-shadow-2dp;
      background-color: @button-raised-default__background-color;

      &:active {
        box-shadow: @whiteframe-shadow-4dp;
      }
    }

    .button-theme(@theme-colors);
  }

  &.md-icon-button {
    border-radius: 50%;
    display: inline-block;
    width: @icon-font__line-height;
    height: @icon-font__line-height;
    letter-spacing: 0;
    min-width: @icon-font__line-height;
    text-overflow: clip;

    .material-icons {
      font-size: @button-icon__font-size;
      line-height: @icon-font__line-height;
    }
  }

  &.md-fab {
    box-shadow: @whiteframe-shadow-2dp;
    width: 56px;
    height: 56px;
    letter-spacing: 0;
    min-width: 56px;
    border-radius: 50%;

    &:not([disabled]) {
      background-color: @button-raised-default__background-color;
      color: contrast(
        @button-raised-default__background-color,
        @primary-dark-color,
        @primary-light-color
      );

      &:active {
        box-shadow: @whiteframe-shadow-4dp;
        background-color: contrast(
          shade(@button-raised-default__background-color, 12%),
          shade(@button-raised-default__background-color, 12%),
          tint(@button-raised-default__background-color, 12%)
        );
      }

      &:hover,
      &:focus {
        background-color: shade(@button-raised-default__background-color, 12%);
      }
    }

    .material-icons {
      line-height: 56px !important;
    }

    &.mini {
      width: 40px;
      height: 40px;
      min-width: 40px;

      .material-icons {
        line-height: 40px !important;
      }
    }
  }

  &[disabled] {
    &.raised,
    &.md-fab {
      background-color: @divider-dark-color;
    }

    .md-ripple-container {
      svg circle {
        opacity: 0 !important;
      }
    }
  }
  
  &:not(.md-icon-button):not(.md-fab):not(.raised) {
    &.md-stroke {
      box-shadow: 0 0 0 1px @divider-dark-color;
    }
  }
}

.button-base-styles() {
  -webkit-tap-highlight-color: transparent;
  align-items: center;
  background-color: transparent;
  border: none;
  border-radius: @button__border-radius;
  transition: @swift-ease-out;
  user-select: none;
  border-radius: @button__border-radius;
  color: @primary-dark-color;
  display: inline-flex;
  font-size: @button__font-size;
  font-weight: @button__font-weight;
  height: @button__line-height;
  justify-content: center;
  letter-spacing: 0.1em;
  line-height: @button__line-height;
  margin: @button__margin;
  min-width: 64px;
  outline: none;
  overflow: hidden;
  padding: 0 0;
  position: relative;
  text-align: center;
  text-decoration: none;
  text-overflow: ellipsis;
  text-transform: uppercase;
  vertical-align: middle;
  white-space: nowrap;

  &:not([disabled]) {
    box-shadow: none;
    cursor: pointer;

    &:hover,
    &:focus {
      background-color: rgba(0, 0, 0, 0.12);
    }
  }

  &[disabled] {
    color: @disabled-dark-color;
    pointer-events: none;

    .material-icons {
      color: @disabled-dark-color;
    }
  }
  
  &:not(.md-fab):not(.md-icon-button):not(.raised):not(.md-stroke),
  &.raised:not(.md-icon-button):not(.md-fab),
  &.md-stroke {
    
    i:first-child {
      font-size: 18px;
      height: 18px;
      margin: 0 8px 0 0;
      min-height: 18px;
      min-width: 18px;
      width: 18px;
    }
  }
  
  &:not(.md-fab):not(.md-icon-button):not(.raised):not(.md-stroke) {
    padding: 0 8px;
    
    i:first-child {
      margin-left: 0; 
    }
  }
  
  &.raised:not(.md-icon-button):not(.md-fab),
  &.md-stroke {
    padding: 0 16px;
    
    i:first-child {
      margin-left: -4px; 
    }
  }
}

.button-theme(@theme) {
  .loop(length(@theme));

  .loop(@index) when(@index > 0) {
    @themeSet: extract(@theme, @index);
    @type: extract(@themeSet, 1);
    @color: extract(@themeSet, 2);

    &.@{type} {
      color: @color;

      &:active,
      &:focus {
        background-color: fade(@color, 20%);
      }

      .md-ripple-container {
        svg circle {
          fill: @color;
        }
      }

      &.raised,
      &.md-fab {
        background-color: @color;

        &:hover,
        &:focus {
          background-color: shade(@color, 12%);
        }

        &:active {
          background-color: contrast(
            shade(@color, 12%),
            shade(@color, 12%),
            tint(@color, 12%)
          );
        }

        .md-ripple-container {
          svg circle {
            fill: contrast(shade(@color, 12%), #000, #fff);
          }
        }
      }
      &.raised,
      &.md-fab {
        color: contrast(
          shade(@color, 12%),
          @primary-dark-color,
          @primary-light-color
        );
      }
    }
    .loop(@index - 1);
  }
}

.md-ripple-active {
  transition: @swift-ease-out;
  position: relative;
  overflow: hidden;
  background-clip: padding-box;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;

  .md-ripple-container {
    pointer-events: none;
    top: 0;
    left: 0;
    display: block;
    width: 100%;
    height: 100%;
    position: absolute;
    background-clip: padding-box;
    overflow: hidden;
    -webkit-mask-image: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAIAAACQd1PeAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAA5JREFUeNpiYGBgAAgwAAAEAAGbA+oJAAAAAElFTkSuQmCC");

    .md-ripple,
    .md-focus {
      transition-duration: 0.8s;
      transition-timing-function: @transition-timing;
      transition-property: opacity, transform;
      border-radius: 50%;
      position: absolute;
      top: 0;
      left: 0;
      margin: 0;
    }

    .md-focus {
      animation: focusPulse 2.5s infinite;
      left: 50%;
      top: 50%;
    }
  }

  .md-ripple-container {
    border-radius: 2px;
  }

  &.md-icon-button,
  &.md-fab {
    .md-ripple-container {
      border-radius: 50%;
    }
  }

  &:not([disabled]) {
    .md-ripple-container {
      svg {
        fill: #000000;
        fill-opacity: 0.16;
      }
    }
  }
}
//  Focus animation
@keyframes focusPulse {
  .pulseFrames;
}

.pulseFrames() {
  0% {
    transform: translate(-50%, -50%) scale(1, 1);
  }
  50% {
    transform: translate(-50%, -50%) scale(0.9, 0.9);
  }
  100% {
    transform: translate(-50%, -50%) scale(1, 1);
  }
}

// Demo specific styles
body *,
button,
a {
  font-family: @button__font-family;
}

h2 {
  font-weight: 400;
  line-height: 32px;
  margin: 8px 0 0;
}

.content {
  margin: auto;
  text-align: center;

  .section {
    padding: 16px;

    &-content {
      padding: 16px 0 0;
    }
  }
}

.ripple-image {
  display: inline-block;

  img {
    width: 160px;
    height: auto;
  }
}

.ripple-image {
  cursor: pointer;
  border-radius: 30px;
  font-size: 0;
}
!

JS 

              
                (function($){
  "use strict";

  $.fn.extend({
    mdRipple: function(options){
      options = $.extend({
        // Default options

      }, options);
      var namespace = 'mdRipple',
      coreClasses = {
        button: 'md-ripple-active',
        iconButton: 'md-icon-button',
        container: 'md-ripple-container',
        ripple: 'md-ripple',
        focus: 'md-focus'
      },
      coreAttributes = {
        color: 'ripple-color',
        noRipple: 'no-ripple'
      },
      rippleTemplate = '<svg preserveAspectRatio="none" viewBox="25 25 50 50"><circle cx="50" cy="50" r="25"/></svg>',
      mouseDown = false;

      // General element actions
      _initialize(this);

      // Individual element actions
      this.each(function(){
        var elem = $(this);
        elem.on(_namespaceEvents('mousedown'), _mouseDown);
        elem.on(_namespaceEvents('focus'), _drawFocus);
        elem.on(_namespaceEvents('blur'), _clearContainer);
      });

      return this;

      /////////////////////////////////

      function _initialize(elems){
        // Unbind anything within plugin namespace to prevent duplicate event bindings
        elems.off('.' + namespace);
        _addRippleContainerTo(elems);
      }

      function _addRippleContainerTo(elem) {
        var rippleContainer = elem.find('.' + coreClasses.container).get(0);
        if (!rippleContainer) {
          rippleContainer = document.createElement('div');
          rippleContainer.className = coreClasses.container;
          elem.addClass(coreClasses.button).append($(rippleContainer));
        }
      }

      function _getMouseClickCoords(elem, e) {
        var container = elem,
        coords = {};

        if (!e || elem.hasClass(coreClasses.iconButton)){
          coords.x = container.outerWidth() / 2;
          coords.y = container.outerHeight() / 2;
        } else {
          coords.x = e.pageX - container.offset().left;
          coords.y = e.pageY - container.offset().top;
        }

        return coords;
      }

      function _mouseDown(e) {
        var elem = $(this);
        if (!mouseDown && !elem.is(":disabled") && !elem.data(coreAttributes.noRipple)) {
          mouseDown = true;
          var coords = _getMouseClickCoords(elem, e);
          _removeFocus(elem);
          _drawRipple(elem, coords);
        }
        e.preventDefault();
      }

      function _drawRipple(elem, coords) {
        var container = elem.find('.' + coreClasses.container).first(),
        color = elem.data(coreAttributes.color),
        ripple = $(rippleTemplate),
        containerDims = {
          width: container.outerWidth(),
          height: container.outerHeight()
        },
        initialDiameter = (containerDims.width > containerDims.height ? containerDims.width : containerDims.height) * .5,
        greatestWidth, greatestHeight, diameter = 1, scale = 1,
        vm = this;

        ripple.addClass(coreClasses.ripple).css({
          'fill': !!color ? color : '',
          'transform': 'translate(' + coords.x + 'px, ' + coords.y + 'px) translate(-50%, -50%)',
          'opacity': .5,
          'width': initialDiameter,
          'height': initialDiameter
        });
        container.append(ripple);

        if(coords.x >= containerDims.width / 2){
          greatestWidth = coords.x;
        }
        else{
          greatestWidth = containerDims.width - coords.x;
        }
        if(coords.y >= containerDims.height / 2){
          greatestHeight = coords.y;
        }
        else{
          greatestHeight = containerDims.height - coords.y;
        }

        diameter = Math.sqrt(Math.pow(greatestWidth, 2) + Math.pow(greatestHeight, 2)) * 2.05;
        scale = (diameter / initialDiameter);
     
        // Forces the browser to calculate an actual value
        ripple.css('opacity');
        ripple.css('transform');
        ripple.css({
          'opacity': 1,
          'transform': 'translate(' + coords.x + 'px,' + coords.y + 'px) translate(-50%,-50%) scale(' + scale + ')'
        });

        elem.bind(_namespaceEvents('mouseup mouseleave'), function(e){
          mouseDown = false;
          _hideRipple(ripple);
          $(this).unbind(_namespaceEvents('mouseup mouseleave'));
        });
      }

      function _drawFocus(){
        var elem = $(this);

        if(!elem.is(":active")) {
          var container = elem.find('.' + coreClasses.container).first(),
          color = elem.data(coreAttributes.color),
          ripple = $(rippleTemplate),
          coords = _getMouseClickCoords(elem);

          // Destroy all previous instances of focus ripple
          container.find('.' + coreClasses.focus).remove();

          ripple.addClass(coreClasses.focus).css({
            'fill': !!color ? color : '',
            'transform': 'translate(' + coords.x + 'px, ' + coords.y + 'px) translate(-50%,-50%)',
            'width': coords.x * 2 * .9,
            'height': coords.x * 2 * .9
          });

          container.append(ripple);
        }
      }

      function _hideRipple(elem) {
        elem.css('opacity', 0);
        elem.one(_namespaceEvents('transitionend webkitTransitionEnd oTransitionEnd MSTransitionEnd'), function() {
          $(this).remove();
        });
      }

      function _removeFocus(elem) {
        elem.find('.' + coreClasses.container + ' .' + coreClasses.focus).remove();
      }

      function _clearContainer() {
        $(this).find('.' + coreClasses.container).find('.' + coreClasses.focus + ', .' + coreClasses.ripple).remove();
      }

      function _namespaceEvents(eventString) {
        return eventString.trim().split(/\s+/).map(function(a){ return a + '.' + namespace; }).reduce(function(a, b){ return a + ' ' + b });
      }
    }
  });
})(jQuery);

(function(){
  $(document).ready(function(){
    $('button, a.md-button, .ripple-image').mdRipple();
    
    $('.party-button').on('click focus', function(){
      $(this).data('ripple-color', '#' + ("000000" + Math.random().toString(16).slice(2, 8).toUpperCase()).slice(-6));
    });
    $('.focus-me').focus();
  });
})();
!
999px

Console