JSFiddle - React, Tailwind, and code Playground

HTML

<div class="content">
     <h1>Header</h1>

    <p>Paragraph 1.</p>
    <p>Paragraph 2.</p>
    <p>Paragraph 3.</p>
</div>

CSS

body {
    background-color: yellow;
    padding: 0px;
    margin: 0px;
}
h1 {
    background-color: lime;
    margin-top: 0;
}
.content {
    background-color: pink;
    position: absolute;
    left: 20px;
    top: 0px;
    padding: 0px;
    margin: 0px;
}