JSFiddle - React, Tailwind, and code Playground

HTML

<div class="parent">IMG width=100% height=auto</div>
<div class="parent">
    <div>1</div>
    <div>2</div>
    <div>3</div>
    <div>4</div>
    <div>5</div>
</div>

CSS

div{   
    border:1px solid #ccc;
}
.parent {
    height:600px;
    float:left;
}
.parent div {
    height:19.7%;
}