JSFiddle - React, Tailwind, and code Playground

HTML

<body>
<div class="box">
  <h3>Nagłówek boksa</h3>
  Lorem ipsum dolor sit amet itd itd.
</div>
<div class="box">
  <h3>Nagłówek boksa</h3>
  Lorem ipsum dolor sit amet itd itd.
</div>
</body>

CSS

body {
  font: 13px tahoma,calibri,verdana,sans-serif;
}
.box {
  float: left;
  padding: 5px;
  margin: 20px 10px 0 10px;
  border: 1px solid #eaeaea;
}

.box h3 {
  text-align: right;
  font-size: 14px;
  font-weight: bold;
}