A.可以对父级设置高度
B.给子级元素设置overflow:hidden
C.给父级盒子设置clear:both
D.给子级元素设置clear:left
A.transition:2slinearall
B.transition:linear2sall
C.transition:all2slinear
D.transition:alllinear2s
A.transform-origin:100%0
B.transform-origin:0100%
C.transform-origin:0100px
D.transform-origin:lefttop
A.border-style
B.boxmodel
C.padding
D.margin