JSFiddle - React, Tailwind, and code Playground

HTML

<div class="wrapper">
    <div class="project-container">
        <ul>
            <li><div class="project-box"></div></li>
            <li><div class="project-box"></div></li>
            <li><div class="project-box"></div></li>
        </ul>
    </div>
</div>

CSS

body {
    background-color:#333333;
}

.wrapper {
    text-align: center;
}

.project-container {
    background-color: white;
    margin-left: auto;
    margin-right: auto;
    display: table;
}

.project-container ul {
    margin: 0px;
    padding: 0px;
    float: left;
}

.project-container li {
    float: left;
    display: inline;
    margin: 5px;
}
.project-box {
    float: left;
    margin: 5px;
    width: 150px;
    height: 150px;
    background-color: #333333;
}

.project-box:hover {
    background-color: #0066CC;
}