JSFiddle - React, Tailwind, and code Playground

HTML

<div id="buttons">
  <div id="button1">
    BTN1
  </div>
  <div id="button2">
    BTN2
  </div>
</div>

CSS

#buttons{
  float:center;
  background: black;
  height: 100px;
  width: 900px;
}
#button1 {
background : red;
width: 20px;
}
#button2 {
background : yellow;
width: 20px;
}