JSFiddle - React, Tailwind, and code Playground

HTML

<div id="wrapper">
    <div id="one">one one one one one one</div>
    <div id="two">two two two two two two</div>
</div>

CSS

#wrapper {
    display: table;
    table-layout: fixed;
    
    width:100%;
    height:100px;
    background-color:Gray;
}
#wrapper div { display: table-cell; height:100px; }

#one { position:relative; float:left; width:400px; background-color:green; }
#two { position:relative; float:right; width:196px; background-color:blue; }