Update README.md

Author: evoluteur

README.md

@@ -2,7 +2,7 @@
 
 Experiment on using D3.js for transformations between table view and cards view, and transitions while sorting elements or resizing the browser. 
 
-This code uses HTML rather than SVG, and has no dependencies beside D3.js.
+This code uses HTML (with absolute positioning) rather than SVG, and has no dependencies beside D3.js.
 
 Check out [the demo](https://evoluteur.github.io/d3-table-cards/).