JSFiddle - React, Tailwind, and code Playground

HTML

<div id="sidebar" style="background-color:green;">
		<img src="images/diced_200.jpg" style="background-color:blue; border:0;"></img>
        <div id="navi">
			<ul>
				<li>Startseite</li>
				<li>Showcase</li>
				<li>Über uns</li>
				<li>Impressum</li>
			</ul>
		</div>
	</div>
	<div id="content">
		ScrollScroll
        <br />
		<p>Scroll</p>
		<p>Scroll</p>
		<p>Scroll</p>
		<p>Scroll</p>
		<p>Scroll</p>
		<p>Scroll</p>
		<p>Scroll</p>
		<p>Scroll</p>
		<p>Scroll</p>
		<p>Scroll</p>
		<p>Scroll</p>
		<p>Scroll</p>
		<p>Scroll</p>
		<p>Scroll</p>
		<p>Scroll</p>
		<p>Scroll</p><p>Scroll</p>
		<p>Scroll</p><p>Scroll</p>
		<p>Scroll</p>
		
	</div>

CSS

body, html {
	width:100%;
	height:100%;
	margin:0px;
	padding:0px;
}

ul{
    margin:0;
}

img{
    width:200px;
    height:200px;
    border:solid 1px black;
}

div#sidebar{
	position:fixed;
	height:100%;
	/*margin-top:10px;*/
}

div#navi{
	width:200px;
	height:100%;
	background-color:lightgrey;
	/*margin-top:200px;*/
}

div#navi ul{
    padding-top:50px;
}

div#content{
	width:auto;
	margin-left:200px;
	height:auto;
	background-color:red;
	/*margin-top:-20px;*/
	
}