.container{max-width:800px}.container h1{margin-top:20px}.ligne{width:100%;height:50px}.cell-50{float:left;width:50%}.cell-50 button,.cell-50 a{width:100%}.pl50{padding-left:50px}.pr50{padding-right:50px}div.cond{color:#666;margin-top:30px;margin-bottom:30px}