JSFiddle - React, Tailwind, and code Playground

HTML

<div class="pledges_boutons"><a href="http://www.google.com">Click here</a></div>

CSS

body {
 background-color:yellow;   
}
.pledges_boutons {
    width: 157px;
    color: #fff;
    font-family: "Arial Black", Gadget, sans-serif;
    font-size: 11px;
    height: 18px;
    text-align: center;
    margin-right: 10px;
    margin-left: 10px;
    margin-top: 5px;
    margin-bottom: 5px;
    text-decoration: none;
    display: block;
    background-color: #868686;
    }
.pledges_boutons a:link {
    text-decoration:none;
    color:#fff;
}
.pledges_boutons a:visited {
    text-decoration:none;
    color:#fff;
}
.pledges_boutons a:active {
    text-decoration:none;
    color:#fff;
}
.pledges_boutons a:hover {
    color:#000;
    background-color:white;
}
.pledges_boutons:hover {
    color: #000;
    cursor: pointer;
    background-color: #fff;
}