var title = d3.select('body').select('#title');
title.text('Hello World').style('color', 'white');
var width = 800, height = 600;
<div id="title"></div>
<div id="container"></div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.13.0/d3.min.js"></script>