CSS - float

Question

I can realize the following functions  in the version of css.
but how I do in visual studio 2010 without "float : positioned"
#figure
  {
  	width: 100px;
	height: 100px;
	background-color: blue;
	
	float: positioned;
	position: absolute;
	bottom: 50px;
	left: 40%;
  }