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仅做为拓展思路的参考;margin-left;margin-left;div><:#000;height;/:1px;width;//:auto;
<div>div>/height;div style="<:left:1px":197px:0px":alpha(opacity=50):#000:3px":#000:0px">:214px:1px;background;
<>background:#000;/margin-left:197px;/<
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<<:1px;>margin-left;<>:#000;width;background;/:0px":both"width;div>div>div style="div style="/:relative;float;height;width;float;>:1px:3px"div>>margin-left;clear:1px;width:1px;>div style="position;"<div>:1px"height:1px:1px;div>width;background;div style="
<div>:1px:1px:1px;div>height:1px;/background;
<<div>width;background;<div style="height:#000:#000;<width;/div style="margin-left;height;
<
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<<:#000;border-bottom;
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<div style="height;height;width:220px;div style="
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</margin-left;>background:1px:2px"<background;div style="border-top，实际应用价值不大;>
