<body>
        <div class="container">
            <div id="slider">
                <div id="slides">
                    <div class="slide"><img src="https://source.unsplash.com/y1yQQmozTBw/1000x400" width="100%">
                    <div class="caption">
                        <h1>I'm a header</h1>
                        <p>And I'm a paragraph number 1</p>
                        <div class="controllers">
                            <span class="left"></span>
                            <span class="right"></span>
                        </div>
                    </div>
                    </div>
                    <div class="slide"><img src="https://source.unsplash.com/l82NzBSYbj0/1000x400" width="100%">
                    <div class="caption">
                        <h1>I'm a header</h1>
                        <p>And I'm a paragraph number 2</p>
                        <div class="controllers">
                            <span class="left"></span>
                            <span class="right"></span>
                        </div>
                    </div>
                    </div>
                    <div class="slide"><img src="https://source.unsplash.com/ZOtnmYS0JVg/1000x400" width="100%">
                    <div class="caption">
                        <h1>I'm a header</h1>
                        <p>And I'm a paragraph number 3</p>
                        <div class="controllers">
                            <span class="left"></span>
                            <span class="right"></span>
                        </div>
                    </div>
                    </div>
                    <div class="slide"><img src="https://source.unsplash.com/5X39cfzKX3o/1000x400">
                    <div class="caption">
                        <h1>I'm a header</h1>
                        <p>And I'm a paragraph number 4</p>
                        <div class="controllers">
                            <span class="left"></span>
                            <span class="right"></span>
                        </div>
                    </div>
                    </div>
                </div>
                <nav id="thumbs">
                    <ul>
                        <li>
                            <a href="#">
                                <img src="https://source.unsplash.com/y1yQQmozTBw/100x50">
                            </a>
                        </li>
                        <li>
                            <a href="#">
                                <img src="https://source.unsplash.com/l82NzBSYbj0/100x50">
                            </a>
                        </li>
                        <li>
                            <a href="#">
                                <img src="https://source.unsplash.com/ZOtnmYS0JVg/100x50">
                            </a>
                        </li>
                        <li>
                            <a href="#">
                                <img src="https://source.unsplash.com/5X39cfzKX3o/100x50">
                            </a>
                        </li>
                        
                    </ul>
                </nav>
            </div>
        </div>
</body>
* {
    margin: 0;
    padding: 0;
}

body {
    color: #333;
    font-size: 13px;
    background: #f4f4f4;
    font-family: sans-serif;
}

.container {
    width: 90%;
    max-width: 960px;
    margin: 30px auto;
    text-align: center;
    position: relative;
}

p {
    padding-top: 10px;
}


#slider {
    background-color: #fff;
    overflow: hidden;
}

img {
    width: 100%;
}

#slides {
    height: 100%;
    width: 400%;
}

.slide {
    /* dummy width */
    width: 25%; 
    float: left;
    position: relative;
}

#thumbs {
    position: absolute;
    display: block;
    bottom: 10px;
    left: 10px;
}

a, a:visited {
    color: #0196e3;
    text-decoration: none;
    outline: none;
    display: block;
    height: 48px;
    border: 1px solid #fff;
    -webkit-transition: all 300ms ease-in-out;
    -moz-transition: all 300ms ease-in-out;
    transition: all 300ms ease-in-out;
    opacity: 0.8;
}

ul {
    margin: 0;
    padding: 0;
}

#thumbs li {
    display: inline-block;
    list-style: none;
}

#thumbs li a {
    width: 100px;
    height: 50px;
}

li.active a, li.active a:hover {
    border: 1px solid #0196e3;
    opacity: 1;
}

.caption {
    position: absolute;
    display: inline-block;
    top: 10px;
    right: 10px;
    padding: 20px 40px;
    background-color: rgba(0,0,0,0.8);
    color: #fff;
    text-align: left;
}

.caption .controllers span {
    display: inline-block;
    list-style: none;
    width: 13px;
    height: 13px;
    position: absolute;
    top: calc(50% - 8px);
    cursor: pointer;
}

.caption .controllers .right {
    right: 15px;
    border-top: 3px solid #fff;
    border-right: 3px solid #fff;
    transform: rotate(45deg);
}

.caption .controllers .left {
    left: 15px; 
    border-top: 3px solid #fff;
    border-left: 3px solid #fff;
    transform: rotate(-45deg);
}

@media (max-width: 658px) {
  #thumbs li a {
    width: 50px;
    height: 25px;
  }
}
$(document).ready(function(){
  // set automatic full container width
    $("#slides").css("width", $("#slides .slide").length * 100 + "%")
  
    $(".slide").css("width", 100 / $("#slides  .slide").length + "%")
  
    var totalWidth = 0;
    
    $("#slides .slide").each(function(i){
        totalWidth += 100 + "%";
    });
    
    $("#slides").width(totalWidth);
    $("#thumbs ul li a").click(function(event, keepScroll){
        event.preventDefault();
        $("li").removeClass("active").addClass("inactive");
        $(this).parent().addClass("active");
        var pos = $(this).parent().prevAll().length;
        $("#slides").stop().animate({marginLeft:-"100" *[pos]+"%"}, 450);
        
        //stop autoscroll
        if(!autoScroll) clearInterval(itvl); 
    });
    
    //make first active
    $("#thumbs ul li:first").addClass("active").siblings().addClass("inactive");
    
    //set right scroll
    $('.controllers .right').on('click', function(){
        if(curr == -1) return false;
        $("#thumbs ul li a").eq(curr%$("#thumbs ul li a").length).trigger("click",[true]);
        curr++;
    });
    
    $('.controllers .left').on('click', function(keepScroll){
        var currSlide = $(".active");
        var curr = $(".active").index();
        var totalLength =  $("#thumbs ul li a").length - 1;
        $(currSlide).removeClass('active');
        if (curr == 0 ){
            $("#slides").stop().animate({marginLeft:-"100" *[totalLength]+"%"}, 450);
            $("#thumbs ul li:last-child").addClass('active');
        } else {
            $("#slides").stop().animate({marginLeft:-"100" *[curr - 1]+"%"}, 450);
            $(currSlide).prev().addClass('active');
        } 
      if(!autoScroll) clearInterval(itvl); 
    });
    
    var autoScrollOn = true;
    
    //set autoscroll
    var curr = 1;
    function autoScroll(){
        if(curr == -1) return false;
        $("#thumbs ul li a").eq(curr%$("#thumbs ul li a").length).trigger("click",[true]);
        curr++;
    }
    
    //set auto speed
    var itvl = setInterval(function(){autoScroll()}, 6000);
    
});

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

  1. https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js