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HTML 

              
                <div id="carousel">
  <div class="slides">
    <div class="hero hero1"></div>
  </div>
  <div class="slides">
    <div class="hero hero2"></div>
  </div>
  <div class="slides">
    <div class="hero hero3"></div>
  </div>

  <a id="heroPrev" class="prev hero-nav">&#10094</a>
  <a id="heroNext" class="next hero-nav">&#10095</a>

</div>
<!-- end #carousel -->

<div id="heroBtnContainer" class="button-container">
  <div id="heroNav0" class="hero-radio-button"></div>
  <div id="heroNav1" class="hero-radio-button"></div>
  <div id="heroNav2" class="hero-radio-button"></div>
</div>
!

CSS 

              
                /* https://meyerweb.com/eric/tools/css/reset/ 
   v2.0 | 20110126
   License: none (public domain)
*/
/* line 6, ../scss/partials/_reset.scss */
html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed,
figure, figcaption, footer, header, hgroup,
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
	margin: 0;
	padding: 0;
	border: 0;
	font-size: 100%;
	font: inherit;
	vertical-align: baseline;
}

/* HTML5 display-role reset for older browsers */
/* line 27, ../scss/partials/_reset.scss */
article, aside, details, figcaption, figure,
footer, header, hgroup, menu, nav, section {
	display: block;
}

/* line 31, ../scss/partials/_reset.scss */
body {
	line-height: 1; }

/* line 34, ../scss/partials/_reset.scss */
ol, ul {
	list-style: none; }

/* line 37, ../scss/partials/_reset.scss */
blockquote, q {
	quotes: none; }

/* line 40, ../scss/partials/_reset.scss */
blockquote:before, blockquote:after, q:before, q:after {
	content: '';
	content: none;
}

/* line 45, ../scss/partials/_reset.scss */
table {
	border-collapse: collapse;
	border-spacing: 0;
}

/* line 2, ../scss/partials/_global.scss */
html {
	box-sizing: border-box;
}

/* line 5, ../scss/partials/_global.scss */
*, *:before, *:after {
	box-sizing: inherit;
}

/* line 9, ../scss/partials/_global.scss */
body {
	background-color: #e6e8e1;
	font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
}

/* line 14, ../scss/partials/_global.scss */
h1 {
	font-size: 30px;
	line-height: 0.65;
}

/* line 19, ../scss/partials/_global.scss */
h5 {
	font-size: 14px;
	line-height: 1.857;
}

/* line 24, ../scss/partials/_global.scss */
p {
	color: rgba(58, 68, 72, 0.8);
	font-size: 13px;
	line-height: 1.385;
	text-align: justify;
}

/* line 32, ../scss/partials/_global.scss */
.centered {
	margin: 0 auto;
}

/* line 37, ../scss/partials/_global.scss */
.shadowed {
	box-shadow: 0 0 8px 1px #b3b6b6;
}

#carousel .animate {
	animation: animate 1s;
}
@-webkit-keyframes slide-over {
	from {
		opacity: 0;
	}
	to {
	opacity: 100%;
	}
}

/* line 1, ../scss/partials/_carousel.scss */
#carousel {
	height: 450px;
	width: 900px;
	margin: 20px auto 0;
	overflow: hidden;
	position: relative;
}
@media (max-width: 768px) {
	/* line 1, ../scss/partials/_carousel.scss */
	#carousel {
		height: 300px;
		width: 600px;
	}
}
@media (max-width: 480px) {
	/* line 1, ../scss/partials/_carousel.scss */
	#carousel {
		height: 225px;
		width: 450px;
	}
}
/* line 16, ../scss/partials/_carousel.scss */
#carousel .slides {
	-webkit-animation: slide-over 1s;
	border: 5px solid white;
	display: none;
	height: 100%;
	width: 100%;
	position: absolute;
	top: 0;
	left: 0;
}
/* line 25, ../scss/partials/_carousel.scss */
#carousel .slides .hero {
	height: 100%;
	width: 100%;
}
/* line 29, ../scss/partials/_carousel.scss */
#carousel .slides .hero1 {
	background: url("http://drewtadams.com/images/hero1.png") white;
	background-size: 100% auto;
}
/* line 33, ../scss/partials/_carousel.scss */
#carousel .slides .hero2 {
	background: url("http://drewtadams.com/images/hero2.png") white;
	background-size: 100% auto;
}
/* line 37, ../scss/partials/_carousel.scss */
#carousel .slides .hero3 {
	background: url("http://drewtadams.com/images/hero3.jpg") white;
	background-size: 100% auto;
}
/* line 43, ../scss/partials/_carousel.scss */
#carousel .hero-nav {
	color: white;
	cursor: pointer;
	font-size: 30px;
	padding: 10px;
	position: absolute;
	top: 50%;
	text-shadow: #000 0px 0px 1px,   #000 0px 0px 1px,   #000 0px 0px 1px,
				 #000 0px 0px 1px,   #000 0px 0px 1px,   #000 0px 0px 1px;
	transform: translate(0, -50%);
	transition: ease-out 0.6s;
	-webkit-touch-callout: none;
	-webkit-user-select: none;
	-moz-user-select: none;
	-ms-user-select: none;
	user-select: none;
}
/* line 53, ../scss/partials/_carousel.scss */
#carousel .hero-nav:hover {
	background: rgba(0, 0, 0, 0.8);
	transition: ease-in 0.6s;
}
/* line 58, ../scss/partials/_carousel.scss */
#carousel .prev {
	left: 5px;
}
/* line 61, ../scss/partials/_carousel.scss */
#carousel .next {
	right: 5px;
}

/* line 66, ../scss/partials/_carousel.scss */
.button-container {
	margin: 19px auto;
	text-align: center;
}
@media (max-width: 480px) {
	/* line 66, ../scss/partials/_carousel.scss */
	.button-container {
		min-width: 450px;
	}
}
/* line 73, ../scss/partials/_carousel.scss */
.button-container .hero-radio-button {
	background: white;
	border-top: 1px inset;
	border-radius: 7.5px;
	cursor: pointer;
	display: inline-block;
	margin-right: 5px;
	height: 15px;
	width: 15px;
	-webkit-touch-callout: none;
	-webkit-user-select: none;
	-moz-user-select: none;
	-ms-user-select: none;
	user-select: none;
}
/* line 84, ../scss/partials/_carousel.scss */
.button-container .hero-radio-button:last-child {
	margin: 0;
}
/* line 89, ../scss/partials/_carousel.scss */
.button-container .selected {
	background: black;
}

/* line 1, ../scss/partials/_buttons.scss */
.radio-button {
	cursor: pointer;
	display: inline-block;
	height: 15px;
	width: 15px;
}
/* line 7, ../scss/partials/_buttons.scss */
.radio-button .selected {
	background: url(../images/buttons/selected-radio.png);
	height: 100%;
	width: 100%;
}
/* line 13, ../scss/partials/_buttons.scss */
.radio-button .unselected {
	background: url(../images/buttons/unselected-radio.png);
	height: 100%;
	width: 100%;
}

/* line 20, ../scss/partials/_buttons.scss */
.button {
	-webkit-border-radius: 7px;
	-moz-border-radius: 7px;
	-ms-border-radius: 7px;
	border-radius: 7px;
	background: #007ad6;
	height: 41px;
	width: 100%;
	padding: 2px;
	position: relative;
}
/* line 28, ../scss/partials/_buttons.scss */
.button .glare {
	-webkit-border-radius: 7px;
	-moz-border-radius: 7px;
	-ms-border-radius: 7px;
	border-radius: 7px;
	background: #40a7f4;
	height: 20px;
	width: 100%;
}
/* line 35, ../scss/partials/_buttons.scss */
.button .icon {
	border-left: 2px solid #83beea;
	height: 35px;
	width: 27px;
	position: absolute;
	top: 3px;
	right: 14px;
}
/* line 43, ../scss/partials/_buttons.scss */
.button .icon img {
	margin: 4px 0 0 3px;
}
/* line 48, ../scss/partials/_buttons.scss */
.button .text {
	color: white;
	float: right;
	font-size: 15px;
	text-shadow: 0 0 2px black;
	text-transform: uppercase;
	position: absolute;
	margin: 0 auto;
	top: 15px;
	left: 12px;
}
/* line 59, ../scss/partials/_buttons.scss */
.button .without-icon {
	left: 21.5%;
}
!

JS 

              
                // global variables
// hero carousel
var currentIndex = 0;
var previousSlideIndex = 0;

var slides = document.getElementsByClassName('slides');

var heroPrev = document.getElementById('heroPrev');
var heroNext = document.getElementById('heroNext');

var heroNav0 = document.getElementById('heroNav0');
var heroNav1 = document.getElementById('heroNav1');
var heroNav2 = document.getElementById('heroNav2');
var heroNavBtns = document.getElementsByClassName('hero-radio-button');


// load event listeners when the DOM is loaded
document.addEventListener('DOMContentLoaded', startup());


// 
function startup() {
	initEventListeners();
	liveSlide(currentIndex = 0);
}// end startup()


// 
function initEventListeners() {
	heroPrev.addEventListener('click', function() { nextSlide(-1); });
	heroNext.addEventListener('click', function() { nextSlide(1); });
	heroNav0.addEventListener('click', function() { liveSlide(0); });
	heroNav1.addEventListener('click', function() { liveSlide(1); });
	heroNav2.addEventListener('click', function() { liveSlide(2); });
}// end initEventListeners()


// determine next slide (left or right)
function nextSlide(x) {
	previousSlideIndex = currentIndex;
	currentIndex += x;

	if(currentIndex < 0)
		currentIndex = slides.length - 1;
	else if(currentIndex > slides.length -1)
		currentIndex = 0;
	//currentIndex %= slides.length;
	determineSlide();
}// end nextSlide(...)


// determine live slide
function liveSlide(x) {
	previousSlideIndex = currentIndex;
	currentIndex = x;
	determineSlide();
}// end liveSlide()


// determine which slide to show and which nav button to be selected
function determineSlide() {
	// hide previously displayed slide and deselect nav button
	slides[previousSlideIndex].style.display = 'none';
	heroNavBtns[previousSlideIndex].className = 'hero-radio-button';//heroNavBtns[previousSlideIndex].className.replace(' selected', '')


	// display selected slide and select nav button
	slides[currentIndex].style.display = 'block';
	heroNavBtns[currentIndex].className += ' selected';
}// end determineSlide()
!
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