JSFiddle - React, Tailwind, and code Playground

HTML

<ul class="links">
    <li><a href="http://www.google.com"><b>Accueil</b></a></li>
            <li>
                <a href="#"><b>Liste serveurs</b></a>
                    <ul class="sub">
                        <li><a rel="1" href="http://www.google.com"><b>sub 1</b></a></li>
                        <li><a rel="1" href="#"><b>sub 2</b></a></li>
                    </ul>
            </li>
    </ul>

CSS

#slideshow {
    width: 100%;
    display: block;
    float: left;
    overflow: hidden;
    padding: 0;
    margin: 0;
    border-bottom: solid thin #d0cccc;
}
#slide-wrapper {
    overflow:hidden;
    background:black;
    list-style: none;
    width: 100%;
    padding: 0;
    margin: 0;
}
#slide-wrapper p {
    padding: 12px;
    margin: 0;
}
#slide-wrapper li {
    display: none;
}
#slide-wrapper li:first-child {
    display: block;
}
.caption-title {
    font-size: 24px;
    color: white;
    text-align: center;
}
.thumnails {
    width: 100%;
    display: block;
    float: left;
    padding: 0;
    margin: 12px auto;
    position: relative;
    list-style: none;
    text-align: justify;
}
.thumnails .img-thum {
    width: 23%;
    display: inline-block;
    padding: 0;
    margin: 0 auto;
    position: relative;
}
.thumnails .img-thum.active img {
    background: #000;
    padding:2px;
}
.thumnails .img-thum.active:after {
    content:"";
    display: inline-block;
    position: absolute;
    top: 0;
    left: 50%;
    margin: -10px 0 0 -5px;
    width: 0;
    height: 0;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-bottom: 10px solid black;
}
.thumnails .img-thum img {
    width: 100%;
    padding: 2px;
    margin: 0;
}
.thumnails .img-thum .thum-capt {
    width: 100%;
    float: left;
    overflow: hidden;
    display: block;
    position: relative;
    padding: 0;
    margin: 0;
    font-weight: bold;
    font-size: 14px;
    font-family: serif;
    text-align: left;
}
.thumnails:after {
    content:'';
    width: 100%;
    display: inline-block;
}

JavaScript

$(document).ready(function(){
    $('a').click(function(noway) {
                if($(this).attr("rel")!="1")
                noway.preventDefault();
    })
 });