JSFiddle - React, Tailwind, and code Playground

HTML

<p>This is a test, this font should have font-size of 14px.</p> 
<p>This is a test, this font should have font-size of 14px.</p> 
<p>This is a test, this font should have font-size of 14px.</p> 
<p>This is a test, this font should have font-size of 14px.</p> 
<p>This is a test, this font should have font-size of 14px.</p> 
<p>This is a test, this font should have font-size of 14px.</p> 
<p>This is a test, this font should have font-size of 14px.</p>

CSS

html { font-size: 62.5%; } /* font-size: 62.5% now means that 1.0 rem = 10px */
body { background: #fff; font-family: arial; font-size: 1.4rem; line-height: 1.6rem; }