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单项选择题
A.animator和@key-frames
B.animator和@keyframes
C.animation和@key-frames
D.animation和@keyframes
单项选择题
A.div{transform:rotate(30deg);}
B.div{transform:rotate(330deg);}
C.div{transform:rotateY(30deg);}
D.div{transform:rotateX(30deg);}
单项选择题
A.flex-start
B.flex-end
C.space-between
D.space-around
单项选择题
A.flex-direction:row
B.flex-direction:row-reverse
C.flex-direction:column
D.flex-direction:column-reverse
单项选择题
A.none
B.border-box
C.content-box
D.padding-box