啥情况，照着代码敲，画面显示不出来
.box{
width:100px;
height:100px;
background:#000;
}
.demo-1{
&:hover{
transform:rotate(45deg);
}
transition: transform 2s linear 2s;
}
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.box{
width:100px;
height:100px;
background:#000;
}
.demo-1{
&:hover{
transform:rotate(45deg);
}
transition: transform 2s linear 2s;
}
2019-12-06
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