JSFiddle - React, Tailwind, and code Playground

HTML

<div id="block-for-slider">
        <div id="viewport">
            <ul id="slidewrapper">
                <li class="slide"><img src="https://hsto.org/files/8d4/b19/80d/8d4b1980d48c418090e2c4466d8c06e1.jpg" alt="1" class="slide-img"></li>
                <li class="slide"><img src="https://hsto.org/files/ef1/3d7/97e/ef13d797e4c642c7a1d4b2b91f7ad7b3.jpg" alt="2" class="slide-img"></li>
                <li class="slide"><img src="https://hsto.org/files/ec5/592/f1e/ec5592f1e814401eb38305682a8e88d4.jpg" alt="3" class="slide-img"></li>
                <li class="slide"><img src="https://hsto.org/files/eda/61a/3c5/eda61a3c53db408d820643998d9acd81.jpg" alt="4" class="slide-img"></li>
            </ul>

            <div id="prev-next-btns">
                <div id="prev-btn"></div>
                <div id="next-btn"></div>
            </div>

            <ul id="nav-btns">
                <li class="slide-nav-btn"></li>
                <li class="slide-nav-btn"></li>
                <li class="slide-nav-btn"></li>
                <li class="slide-nav-btn"></li>
            </ul>
        </div>
    </div>

CSS

body {
    margin: 0;
    padding: 0;
}

#block-for-slider {
    width: 80%;
    margin: 0 auto;
    margin-top: 100px;
}

#viewport {
    width: 100%;
    position: relative;
    overflow: hidden;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    -o-user-select: none;
    user-select: none;
    text-align: center;
}

#slidewrapper {
    position: relative;
    width: calc(100% * 4);
    -webkit-transition: 1s;
    -o-transition: 1s;
    transition: 1s;
    -webkit-transition-timing-function: cubic-bezier(.67,.01,.23,1);
    -o-transition-timing-function: cubic-bezier(.67,.01,.23,1);
    transition-timing-function: cubic-bezier(.67,.01,.23,1);
}

#slidewrapper, #slidewrapper ul, #slidewrapper li {
    margin: 0;
    padding: 0;
}

.slide {
    width: calc(100%/4);
    list-style: none;
    display: inline;
    float: left;
}

.slide-img {
    width: 100%;
}

#prev-btn, #next-btn {
    position: absolute;
    width: 50px;
    height: 50px;
    background-color: #fff;
    border-radius: 50%;
    top: calc(50% - 25px);
}

#prev-btn:hover, #next-btn:hover {
    cursor: pointer;
}

#prev-btn {
    left: 20px;
}

#next-btn {
    right: 20px;
}

#nav-btns {
    position: absolute;
    width: 100%;
    bottom: 20px;
    padding: 0;
    margin: 0;
    text-align: center;
}

.slide-nav-btn {
    position: relative;
    display: inline-block;
    list-style: none;
    width: 20px;
    height: 20px;
    background-color: #fff;
    border-radius: 50%;
    margin: 3px;
}

.slide-nav-btn:hover {
    cursor: pointer;
}

JavaScript

var slideNow = 1;
var slideCount = $('#slidewrapper').children().length;
var slideInterval = 3000;
var navBtnId = 0;
var translateWidth = 0;

$(document).ready(function() {
    var switchInterval = setInterval(nextSlide, slideInterval);

    $('#viewport').hover(function() {
        clearInterval(switchInterval);
    }, function() {
        switchInterval = setInterval(nextSlide, slideInterval);
    });

    $('#next-btn').click(function() {
        nextSlide();
    });

    $('#prev-btn').click(function() {
        prevSlide();
    });

    $('.slide-nav-btn').click(function() {
        navBtnId = $(this).index();

        if (navBtnId + 1 != slideNow) {
            translateWidth = -$('#viewport').width() * (navBtnId);
            $('#slidewrapper').css({
                'transform': 'translate(' + translateWidth + 'px, 0)',
                '-webkit-transform': 'translate(' + translateWidth + 'px, 0)',
                '-ms-transform': 'translate(' + translateWidth + 'px, 0)',
            });
            slideNow = navBtnId + 1;
        }
    });
});


function nextSlide() {
    if (slideNow == slideCount || slideNow <= 0 || slideNow > slideCount) {
        $('#slidewrapper').css('transform', 'translate(0, 0)');
        slideNow = 1;
    } else {
        translateWidth = -$('#viewport').width() * (slideNow);
        $('#slidewrapper').css({
            'transform': 'translate(' + translateWidth + 'px, 0)',
            '-webkit-transform': 'translate(' + translateWidth + 'px, 0)',
            '-ms-transform': 'translate(' + translateWidth + 'px, 0)',
        });
        slideNow++;
    }
}

function prevSlide() {
    if (slideNow == 1 || slideNow <= 0 || slideNow > slideCount) {
        translateWidth = -$('#viewport').width() * (slideCount - 1);
        $('#slidewrapper').css({
            'transform': 'translate(' + translateWidth + 'px, 0)',
            '-webkit-transform': 'translate(' + translateWidth + 'px, 0)',
            '-ms-transform': 'translate(' +...