多列布局中,定义跨列显示的属性是
A. column-span
B. column-rule
C. column-fill
D. column-gap
多列布局中,定义列高度的属性是
A. column-width
B. column-gap
C. column-fill
D. column-rule
弹性盒布局中,定义伸缩方向的属性是
A. flex-wrap
B. flex-direction
C. justify-content
D. align-items
弹性盒布局中,定义行数的属性(即决定是否换行)是
A. flex-direction
B. flex-wrap
C. justify-content
D. align-items