/* spec information about this property
name= float
css1= http://www.w3.org/TR/2008/REC-CSS1-20080411/#float
css2= http://www.w3.org/TR/2008/REC-CSS2-20080411/visuren.html#propdef-float
css21= http://www.w3.org/TR/2011/REC-CSS2-20110607/visuren.html#propdef-float
css3= http://www.w3.org/TR/2007/WD-css3-box-20070809/#float
other= https://www.w3.org/TR/2017/WD-css-logical-1-20170518/#float-clear
*/