A.padding:5px4px3px B.padding-top:3px C.padding:5px4px D.padding-bottom:-10px;
A.background:#f00 B.width:500px; C.border:1pxsolid#ccc D.height:100px;
A.background:#f00 B.width:500px; C.border:1pxsolid#f00 D.height:100px;