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正确
<style>
#example1 {
border: 10px dotted red;
padding: 20px;
background-color: yellow;
background-clip: @(11);
}
</style>
<style>
#example1 {
border: 10px dotted red;
padding: 20px;
background-color: yellow;
background-clip: padding-box;
}
</style>
<style>
#example1 {
border: 10px dotted red;
padding: 20px;
background-color: yellow;
background-clip: border-box;
}
</style>
<style>
#example1 {
border: 10px dotted red;
padding: 20px;
background-color: yellow;
background-clip: content-box;
}
</style>
不正确
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<style>
#example1 {
border: 10px dotted red;
padding: 20px;
background-color: yellow;
background-clip:
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