The floatstyle attribute on formal objects (figure, etc.) indicates that they should float. This is achieved by adding the float style as a class value in the HTML output. If the value of floatstyle is “float”, then the $default-float-style will be applied. In other words, the CSS classes will be “float left” (as long as $default-float-style is “left”). If any other value is given for floatstyle, then the CSS classes will be “float value”.