JSFiddle - React, Tailwind, and code Playground

HTML

<div id="flex-one">
    <p>Some extra long content (for the container) that correctly wraps!</p>
    <aside>Content</aside>
</div>

<div id="flex-two">
    <p>Some extra long content (for the container) that incorrectly wraps!</p>
    <aside>Content</aside>
</div>

CSS

div {
    width: 250px;
    padding: 1em;
    background: blue;
    display: -webkit-flex;
    display: -ms-flexbox;
    margin-bottom: 1em;
}

#flex-one {
    -webkit-flex-flow: column;
    -ms-flex-direction: column;
}

#flex-two {
    -webkit-flex-flow: row;
    -ms-flex-direction: row;
}

p {
    margin: 0;
    padding: 0;
    background: yellow;
    -ms-flex: 0 1 auto;
}

aside {
    background: red;
    -ms-flex: 0 1 auto;
}