JSFiddle - React, Tailwind, and code Playground

HTML

<section>
<p>Flush with the top of the container.</p>
<p>Nicely</p>
<p>Spaced</p>
<p>Flush with the bottom of the container.</p>
</section>

CSS

* {
    margin: 0;
    padding: 0;    
}

section {
    border: 2px solid blue;
}

p + p {
    border: 1px solid red;
    margin-top: 8px;
}