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Symbols overlap other elements, or be overlapped by them. (We'll seehow you can affect the overlapping order at the end of the chapter.)

Remember that the containing block of an absolutely positionedelement is not necessarily its parent element. In fact, it often isnot, unless the author takes steps to correct this situation.Fortunately, that's easy to do. Just pick the element that youwant to use as the containing block for the absolutely positionedelement, and give it a position ofrelative with no offsets. Thus: | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z



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H2 {margin: 14px 5em 0.1in 3ex;}  /* value variety! */

Figure 7-9 shows us, with a little extra annotation, the results of this declaration.

7.3.2. Percentages and Margins

As stated earlier, it's possible to set percentage values for the margins of an element. Percentages are computed in relation to the width of the parent element, so they change if the parent element's width changes in some way. For