HTML & CSS: Vertical Flow Layout (columnar style), how to implement?

Question

The standard CSS/html positioning of \"flowing\" Elements is horizontal (row based) => float:left;. What do I need to do, to position them like in the example b

Answer 1

Add a class to each of the divs and style it with something like:

.myDiv
{
  width: 33%;
  float: left;
}