JSFiddle - React, Tailwind, and code Playground

HTML

<div class="ctr">
    <span class="menu">
        <button type="button">Afval & reiniging</button>
        <button type="button">Inkopen & aanbesyeden</button>
        <button type="button">Logistiek & mobiliteit</button><br />
        <button type="button">MVO & duurzaamheid</button>
        <button type="button">Energie & klimaat</button>
        <button type="button">Training & coaching</button>
    </span>
</div>

CSS

.ctr {
    text-align: center;
}
.menu {
    display: inline-block;
    text-align: left;
}
button {
    background: #2d2d2d;
    border: none;
    color: #d5d5d5;
    cursor: pointer;
    line-height: 23px;
}
button:hover {
    background: #306dbd;
    color: white;
}