JSFiddle - React, Tailwind, and code Playground

HTML

<body>
    <div id="tuto_wamp" style="width: 7680px; height: 923px; ">
        <!-- Step 1 -->
        <div>
            <div class="content_tuto">
            </div>
        </div>
    </div>
</body>

CSS

#tuto_wamp 
{ 
    background: #3a393c;
    width: 100%;
}

.content_tuto
{
    width: 100px;
    margin: auto;
    display: block;
    border: solid red 1px;
}