JSFiddle - React, Tailwind, and code Playground

HTML

<h1>title</h1>
 <div>
   <label>label</label>
   <span>span</span>
 </div>

CSS

h1 {
  display: inline;
  font-size: unset;
  font-weight: unset;
}

h1 ~ div {
  display: inline;
}

h1 ~ div > span {
  display: block;
}