(Box::getEffectiveTotalWidth) : Check negative margins. cf. clear-float-002.
(Box::getEffectiveTotalWidth) : Check negative margins. cf. clear-float-002.
mattl/es-operating-system,mattl/es-operating-system,mattl/es-operating-system,mattl/es-operating-system,mattl/es-operating-system,mattl/es-operating-system,mattl/es-operating-system