JSFiddle - React, Tailwind, and code Playground

HTML

<div id="content">
    <div class="tab_container">
    test
    </div>
</div>

CSS

#content {
    border: 1px ridge #999;
    height: auto;
    min-height: 1000px;
    width: 1100px;
    margin-top: 40px;
    margin-right: auto;
    margin-bottom: 30px;
    margin-left: auto;
    float: left;
    position: relative;
    width: 100%;
}

.tab_container {
    border: 1px ridge orange;
    clear: both;
    width: 100%;
    border-right: 1px ridge #999;
    margin-bottom: 20px;
    height: 100%;
    position: absolute;
}