JSFiddle - React, Tailwind, and code Playground

HTML

<header></header>
<div id="content">
    <p>HELLO</p>
    <p>HELLO</p>
    <p>HELLO</p>
    <p>HELLO</p>
    <p>HELLO</p>
    <p>HELLO</p>
    <p>HELLO</p>
    <p>HELLOKITTY</p>
    <p>HELLO</p>
    <p>HELLO</p>
    <p>HELLO</p>
    <p>HELLO</p>
    <p>HELLO</p>
    <p>HELLO</p>
    <p>HELLO</p>
    <p>HELLO</p>
    <p>HELLODOLLY</p>
    <p>HELLO</p>
    <p>HELLO</p>
    <p>HELLO</p>
    <p>HELLO</p>
    <p>HELLO</p>
    <p>HELLO</p>
    <p>HELLO</p>
    <p>HELLO</p>
    <p>HELLO</p>
    <p>HELLOWEEN</p>
</div>
<footer></footer>

CSS

body {
        overflow: hidden;
    }
    #content {
        max-height: calc(100% - 120px);
        overflow-y: scroll;
        padding: 0px 10% !important;
        margin-top: 60px !important;
    }


html, body {
    height: 100%;
    width: 100%;
    margin: 0;
    padding: 0;
}
header {
    width: 100%;
    height: 60px;
    background: red;
    position: fixed;
    top: 0;
}

footer {
    width: 100%;
    height: 60px;
    background: red;
    position: fixed;
    bottom: 0;
}