单选题

如何显示这样一个边框:上边框10像素、下边框5像素、左边框20像素、右边框1像素()

Aborder-width:10px5px20px1px

Bborder-width:10px20px5px1px

Cborder-width:5px20px10px1px

Dborder-width:10px1px5px20px

正确答案

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