JSFiddle - React, Tailwind, and code Playground

by NOVUSIDEA

HTML

<link rel="stylesheet" href="https://unpkg.com/swiper/swiper-bundle.min.css">
<script src="https://unpkg.com/swiper/swiper-bundle.min.js"></script>
<div class="slider-wrap">

    <div class="swiper-container slider-main">
    
        <div class="swiper-wrapper">
            <div class="swiper-slide" style="background-image:url(https://source.unsplash.com/random/600x400?0)" data-title="Slide 1"></div>
            <div class="swiper-slide" style="background-image:url(https://source.unsplash.com/random/600x400?1)" data-title="Slide 2"></div>
            <div class="swiper-slide" style="background-image:url(https://source.unsplash.com/random/600x400?2)" data-title="Slide 3"></div>
            <div class="swiper-slide" style="background-image:url(https://source.unsplash.com/random/600x400?3)" data-title="Slide 4"></div>
        </div>
        
        <div class="swiper-pagination"></div>
        
    </div>
    
</div>

CSS

html,
body {
    position: relative;
    height: 100%;
}

body {
    background: #000;
    font-family: Helvetica Neue, Helvetica, Arial, sans-serif;
    font-size: 14px;
    color: #000;
    margin: 0;
    padding: 0;
}

.swiper-container {
    width: 100%;
}

.swiper-slide {
    background-size: cover;
    background-position: center;
}

.swiper-pagination-link {
    text-shadow: 0 0 4px rgba(0, 0, 0, 0.2);
    font-size: 24px;
    display: inline-block;
    padding: 0.2em 0;
    margin: 0 0.4em;
    color: #fff;
    cursor: pointer;
}

.swiper-pagination-link-active {
    border-top: 2px solid #D40A21;
}

.slider-main {
    height: 50vw;
}

.slider-thumbs {
    height: 100px;
    box-sizing: border-box;
    margin-bottom: 1rem;
}

.slider-thumbs .swiper-slide {
    width: 25%;
    height: 100%;
    opacity: 0.4;
}

.slider-thumbs .swiper-slide-thumb-active {
    box-shadow: inset 0 0 0 1px #fff;
    opacity: 1;
}

JavaScript

var sliders = document.querySelectorAll('.slider-wrap');

for( var s = 0; s < sliders.length; s++ ) {

    var slider          = sliders[s],
        sliderMainEl    = slider.querySelector('.slider-main'),
        sliderThumbsEl  = slider.querySelector('.slider-thumbs');

    if (sliderThumbsEl) {
        var sliderThumbs = new Swiper(sliderThumbsEl, {
            slidesPerView: 4,
            watchSlidesVisibility: true,
            watchSlidesProgress: true,
        });
    }   

    var sliderMain = new Swiper(sliderMainEl, {
    	effect: 'fade',
    	loop: true,
        pagination: {
            el: '.swiper-pagination',
            clickable: true,
            bulletClass: 'swiper-pagination-link',
            bulletActiveClass: 'swiper-pagination-link-active',
            renderBullet: function(index, className) {
                var title = this.slides[index].dataset.title;
                return '<span class="' + className + '">' + title + '</span>';
            },
        },
        navigation: {
            nextEl: '.swiper-button-next',
            prevEl: '.swiper-button-prev',
        },
        thumbs: {
            swiper: sliderThumbs
        }
    });

}