This has no effect on the first paragraph or the float box defined within the first paragraph.
这对第一个段落或在第一个段落内定义的浮动框没有任何影响。
Optimum vertical constraint. A float box must be placed as high as possible within its containing block.
最佳垂直限制：浮动框必须被置于此包含块内尽量高的地方。
The clear property indicates which side or sides of an element's box may not be adjacent to an earlier float box.
clear属性表明了一个元素的框的哪一侧或哪些侧不必与之前的浮动框相邻。
Optimum horizontal constraint. A left float box must be put as far to the left as possible within its containing block.
最佳水平限制：浮动框必须被置于此包含块内向左尽量远的地方。
Position precedence rule. When resolving the float box position, the optimum vertical constraint takes precedence over the optimum horizontal constraint.
位置优先原则：在判断浮动框位置时，最佳垂直限制优于最佳水平限制。
Position precedence rule. When resolving the float box position, the optimum vertical constraint takes precedence over the optimum horizontal constraint.
位置优先原则：在判断浮动框位置时，最佳垂直限制优于最佳水平限制。
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