JSFiddle - React, Tailwind, and code Playground

HTML

<h3>Clear Fixed</h3>
<div class="cf">
    <img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6e/Balzac.jpg/220px-Balzac.jpg" width="100">
    <div>some text here</div>
</div>
    
<h3>No Clearfix - What no Background Color!?!? And what is going on with that boarder</h3>
    
    <div class="nocf">
    <img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6e/Balzac.jpg/220px-Balzac.jpg" width="100">
    <div>some text here</div>
        
</div>

CSS

.cf img, .nocf img {float:left;}
.cf div, .nocf div   {float:left;}
.cf, .nocf {background-color:#F00;border: 1px solid black;}

h3 {clear:both;}

/**
 * For modern browsers
 * 1. The space content is one way to avoid an Opera bug when the
 *    contenteditable attribute is included anywhere else in the document.
 *    Otherwise it causes space to appear at the top and bottom of elements
 *    that are clearfixed.
 * 2. The use of `table` rather than `block` is only necessary if using
 *    `:before` to contain the top-margins of child elements.
 */
.cf:before,
.cf:after {
    content: " "; /* 1 */
    display: table; /* 2 */
}

.cf:after {
    clear: both;
}

/**
 * For IE 6/7 only
 * Include this rule to trigger hasLayout and contain floats.
 */
.cf {
    *zoom: 1;
}