不给大家翻译了！懂英文的应该能看懂！
This tutorial examines the different layout properties available in CSS: position:static, position:relative, position:absolute, and float.
1. position:static
The default positioning for all elements is position:static, which means the element is not positioned and occurs where it normally would in the document.
Normally you wouldn't specify this unless you needed to override a positioning that had been previously set.
#div-1 {
position:static;
}
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