一张图片和文字的组合来制作特殊效果

先看看代码:

　　

以下是引用片段： <div id="info"> <h2>TRACKING YOUR IMAGES</h2> <div id="holdit"> <img src="/imagelist/06/24/4fnpgj5042e6.jpg" alt="Winnie the pooh" title="Winnie the pooh" /> <em class="a420"></em> <em class="a430"></em> <em class="a400"></em> <em class="a370"></em> <em class="a340"></em> <em class="a300"></em> <em class="a270"></em> <em class="a250"></em> <em class="a240"></em> <em class="a230"></em> <em class="a230"></em> <em class="a340"></em> <em class="a340"></em> <em class="a360"></em> <em class="a540"></em> <em class="a540"></em> <em class="a540"></em> <em class="a550"></em> <em class="a550"></em> <em class="a550"></em> <em class="a550"></em> <em class="a550"></em> <em class="a550"></em> <em class="a540"></em> <em class="a460"></em> <em class="a490"></em> <em class="a500"></em> <em class="a500"></em> <p>"I shall have to wait until I catch up with it," said Winnie-the-Pooh. "Now, look there." He pointed to the ground in front of him. "What do you see there?"<br /> "Tracks," said Piglet. "Paw-marks." He gave a little squeak of excitement. "Oh, Pooh! Do you think it's a--a--a Woozle?"<br /> "It may be," said Pooh. "Sometimes it is, and sometimes it isn't. You never can tell with paw- marks."<br /> With these few words he went on tracking, and Piglet, after watching him for a minute or two, ran after him. Winnie-the-Pooh had come to a sudden stop, and was bending over the tracks in a puzzled sort of way.<br /> "What's the matter?" asked Piglet.<br /> "It's a very funny thing," said Bear, "but there seem to be two animals now. This--whatever-it-was--has been joined by another--whatever-it-is-- and the two of them are now proceeding in company. Would you mind coming with me, Piglet, in case they turn out to be Hostile Animals?"<br /> Piglet scratched his ear in a nice sort of way, and said that he had nothing to do until Friday, and would be delighted to come, in case it really was a Woozle.<br /> "You mean, in case it really is two Woozles," said Winnie-the-Pooh, and Piglet said that anyhow he had nothing to do until Friday. So off they went together.</p> </div> </div>

　　

以下是引用片段： #info h3{ text-align:center; } #holdit {width:700px; position:relative; margin:3em auto; padding:10px; border:1px solid #ddd;} #holdit img {position:absolute; z-index:1; top:10px; left:10px; } #holdit p { margin:0px; position:relative; z-index:10; line-height:18px; text-align:justify; font-size:10px; font-family:verdana, arial, sans-serif} #holdit em {display:block; float:left; height:18px; clear:left; overflow:hidden; } .a230 {width:230px;} .a240 {width:240px;} .a250 {width:250px;} .a270 {width:270px;} .a300 {width:300px;} .a340 {width:340px;} .a360 {width:360px;} .a370 {width:370px;} .a400 {width:400px;} .a420 {width:420px;} .a430 {width:430px;} .a460 {width:460px;} .a490 {width:490px;} .a500 {width:500px;} .a540 {width:540px;} .a550 {width:550px;}

　　接着我们来分析一下红色加亮的部分:

　　首先将包容对象#holdit设置成相对定位(确保等下的img绝对定位以它左上角为原点)

　　接着把#holdit里面的img设成绝对定位且z-index高度为1，这样img就脱离文档流了

　　将em标签设置左浮动，高度和p的ling-height要一样，再根据图片的图案分别设置每个em的宽度(记得要用clear来清除浮动)

　　最后把P设置成相对定位且z-index高度设置大于img的数值

　　其实我们也可以直接将图片作为为#holdit的背景，这样就不需要专门为img来设置CSS了