1, <span> the first block of text <.span>2, Overflow:hidden out of the parent layer, self-defined standards -for the elimination of floating properties 1, visible: Beyond the partial visible 2, Auto add scroll bar (especially for adding pictures)3, scroll: The size of the elements of the parent layer is displayed, but the child element size if the parent element is added automatically when the scroll bar 4, Hidden : Out-of-section hidden 3, Position properties: 1 relative relative layout; top:0px; left:30px; (in the original position, move) (at any time left and top are the same (with bottom and right))margin-left:20px; (Total left=50px)2, Absolute according to the layout------from their own layer to look out, the first found to find the parent layer 3, fixed: is the relative can see the location of the HTML frame-that will not Change position 4, layer height (which layer can cover which layer)with scrolling interface Z-index: + number
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