Edit fiddle - JSFiddle - React, Tailwind, and code Playground

JSFiddle - React, Tailwind, and code Playground

HTML

<div class="main">
    <div class="top">
        top bar, fixed
    </div>
    <div class="text">
        <textarea>first line
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
Some text, make it long
last line</textarea>
    </div>
</div>

CSS

.main {
    background-color:#eff;
}
.top {
    position:fixed;
    top:0;
    left:0;
    right:0;
    background-color:#00f;
}
textarea {
    margin-top:30px;
    height:10000px;
}

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JSFiddle - React, Tailwind, and code Playground

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