JSFiddle - React, Tailwind, and code Playground

HTML

<div id="buttons">
  <div id="button1">
    b1
  </div>
  <div id="button2">
    b2
  </div>
</div>

CSS

#buttons {
  float:center;
  height:100px;
  width:900px;
  border:1px solid red;
}
#button1 {
  width:20px;
  border:1px solid green;
}
#button2 {
  width:20px;
  border:1px solid blue;
}