JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css">
<link rel="stylesheet" href="http://netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css">
<div class="col-xs-4">
  <div class="col-xs-10 col-xs-offset-1 col-sm-4 col-sm-offset-4">
    <div class="circle" id="step-1-default-image-box">
    1 
    </div>
  </div>
  <h2 class="color-change" id="step-1-question">
  Step One
  </h2>
</div>

CSS

.circle {
  background: #515151;
  -moz-border-radius: 50%;
  -webkit-border-radius: 50%;
  border-radius: max;
  text-align: center;
  padding:10px;
  color: white;
  width: 100%;

}