JSFiddle - React, Tailwind, and code Playground

HTML

<div id="content">
    <div id="content_rdivider">&nbsp;</div>
    <div id="content_right"></div>
</div>

CSS

#content {
    position: relative;
    background-color: #FFF;
    width: 975px;
    padding: 0px 0px 0px 0px;
    background-repeat: no-repeat;
    background-position: bottom left;
    border: solid 1px #d7d7d7;
    border-bottom: none;
    margin-left: auto;
    margin-right: auto;
    direction: ltr;
    overflow: hidden;
    height: auto;
    display: table;
}
#content_right {
    width: 180px;
    height:500px;
    text-align: right;
    float:left;
    display: table-cell;
    background-color: black;
}
#content_rdivider {
    width: 10px;
    text-align: center;
    background-color: red;
    float:left;
    position: relative;
    height: 100%;
    display: table-cell;
}