<div class="wrapper" ng-app="app">
  <!-- Rotate Button -->
  <div class="button-box">
    <div class="button-box--label">360 Rotate</div>
    <div class="center-position">
      <button class="button refresh" ng-controller="fullRotation" ng-click="fullRotate()">
          <i class="material-icons center-position">autorenew</i>
        </button>
    </div>
  </div>

  <!-- Favorite button -->
  <div class="button-box">
    <div class="button-box--label">Favorite</div>
    <div class="center-position">
      <button class="button heart">
        <img src="http://www.knottaverage.com/img/heart-icon.svg" />
      </button>
    </div>
  </div>

  <div class="button-box">
    <div class="button-box--label">Play / Pause</div>
    <div class="center-position">
      <button class="play-button button play">
        <svg width="100%" height="100%" viewBox="0 0 36 36">
          <defs>
            <path id="pause-icon" data-state="playing" d="M11,10 L17,10 17,26 11,26 M20,10 L26,10 26,26 20,26"></path>
            <path id="play-icon" data-state="paused" d="M11,10 L18,13.74 18,22.28 11,26 M18,13.74 L26,18 26,18 18,22.28"></path>
          </defs>
          <use xlink:href="#play-icon"></use>
        </svg>
      </button>
    </div>
  </div>
</div>
/* General CSS */

body {
  font-family: sans-serif;
  font-size: 1em;
}

.wrapper {
  display: flex;
  flex-wrap: wrap;
}

/* Basic button container*/

.button-box {
  flex: 1;
  width: 300px;
  height: 300px;
  border: solid 1px #fff;
  text-align: center;
  background: #f7f7f7;
  position: relative;
}

.center-position {
  position: absolute;
  margin: auto;
  top: 0;
  bottom: 0;
  right: 0;
  left: 0;
}

.button-box--label {
  padding: 8px;
  font-size: 1.25em;
  color: #494949;
  font-family: 'Francois One', sans-serif;
}

.button {
  outline: none;
}

.button {
  cursor: pointer;
  width: 60px;
  border-radius: 60px;
  color: #555;
  display: table;
  height: 60px;
  position: absolute;
  margin: auto;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
}

/* Refresh button */

.refresh {
  border: solid 3px #0cadc9;
  background-color: #16c3e5;
  font-size: 20px;
  box-shadow: 0 1px 1px #999;
}

.material-icons {
  color: #fff;
  font-family: 'Material Icons';
  font-weight: normal;
  font-style: normal;
  font-size: 36px;
  display: inline-block;
  width: 1em;
  height: 1em;
  line-height: 1;
  text-transform: none;
  letter-spacing: normal;
  word-wrap: normal;
  white-space: nowrap;
  direction: ltr;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'liga';
}

/* Heart button */

.heart {
  border-radius: 50%;
  border: 0;
  width: 60px;
  height: 60px;
  border: solid 4px #c40000;
  background-color: #ffefef;
  box-shadow: 0 1px 1px #999,
              inset 0 -1px 1px #f7adad;
  transform: scale(1);
  transition: all 1s;
  cursor: pointer;
}

.heart img {
  width: 30px;
  position: relative;
  top: 3px;
}

.heart:hover  img {
  animation: 1300ms pulse infinite alternate ease-in-out;
}

/* Heart animation pulse */
@keyframes pulse {
  0% { 
    transform: scale(1); 
  }
  50% {
    transform: scale(1.1);
  }
  100% { 
    transform: scale(1);
  }
}

/* End Heart */


/* Play / pause */
.play {
  border: solid 3px #1f701f;
  background-color: #36af38;
  box-shadow: 0 1px 1px #999,
              inset 0 0 1px #999;
}

.play-button svg {
  fill: #fff
}

var app = angular.module('app', []);
var degrees = 360;
var fullRotation = function($scope, $element) {

  $scope.fullRotate = function() {

    var csstransition = '800ms ease';
    var cssrotate = 'rotate(' + degrees + 'deg)';

    $element.children().css({
      '-webkit-transition': csstransition,
      '-moz-transition': csstransition,
      '-o-transition': csstransition,
      'transition': csstransition,
      '-moz-transform': cssrotate,
      '-webkit-transform': cssrotate,
      '-o-transform': cssrotate,
      '-ms-transform': cssrotate
    });
    degrees += 360;
  };

}

console.clear();

var playButton = {
  el: document.querySelector(".play-button"),
  
  states: {
    playing: {
      nextState: "paused",
      iconEl: document.querySelector("#pause-icon")
    },
    paused: {
      nextState: "playing",
      iconEl: document.querySelector("#play-icon")
    }
  },
  
  animationDuration: 350,
  
  init: function () {
    this.setInitialState();
    this.replaceUseEl();
    this.el.addEventListener("click", this.goToNextState.bind(this));
  },
  
  setInitialState: function() {
    var initialIconRef = this.el.querySelector("use").getAttribute("xlink:href");
    var stateName = this.el.querySelector(initialIconRef).getAttribute("data-state");
    this.setState(stateName);
  },
  
  replaceUseEl: function () {
    d3.select(this.el.querySelector("use")).remove();
    d3.select(this.el.querySelector("svg")).append("path")
      .attr("class", "js-icon")
      .attr("d", this.stateIconPath());
    
  },
  
  goToNextState: function () {
    this.setState(this.state.nextState);
    
    d3.select(this.el.querySelector(".js-icon")).transition()
      .duration(this.animationDuration)
      .attr("d", this.stateIconPath());

  },
  
  setState: function (stateName) {
    this.state = this.states[stateName];
  },
  
  stateIconPath: function () {
    return this.state.iconEl.getAttribute("d");
  }
};

playButton.init();
Rerun