【单选题】
A div{width:80px; height:200px; border:2px dashed #000000; margin: 0 10px;}
B div{width:80px; height:200px; border:2px solid #000000; margin: 10px 0;}
C div{width:200px; height:80px; border:2px solid #000000; margin: 10px;}
D div{width:200px; height:80px; border:2px dashed #000000; margin :10px;}
查看更多
