转自：
https://blog.csdn.net/muyutingfeng2008/article/details/48263073
效果图：
demo:
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8" /> <title>两端对齐</title> <style type="text/css"> .hotsearch dd{float: left;line-height: 24px;margin-right: 30px;overflow: hidden;text-align: center; width: 4em; /*这个值是看最长能显示几个文字，如x，则为x em*/ } .hotsearch dd a{display:block;} .w2{ letter-spacing:2em; /*如果需要y个字两端对齐，则为(x-y)/(y-1),这里是（4-2）/(2-1)=2em */ margin-right:-2em; /*同上*/ } .w3{ letter-spacing:0.5em; /*如果需要y个字两端对齐，则为(x-y)/(y-1),这里是（4-3）/(3-1)=0.5em */ margin-right:-0.5em; /*同上*/ } </style></head><body> <span style="font-size:12px;"> <dl class="hotsearch" style="width:300px;"> <dt>热门搜索</dt> <dd><a rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" href="#" target="_blank" ref="nav" class="w3">电视机</a></dd> <dd><a rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" href="#" target="_blank" ref="nav" class="w4">性感漂亮</a></dd> <dd><a rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" href="#" target="_blank" ref="nav" class="w3">高跟鞋</a></dd> <dd><a rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" href="#" target="_blank" ref="nav" class="w2">手机</a></dd> <dd><a rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" href="#" target="_blank" ref="nav" class="w2">对齐</a></dd> <dd><a rel="external nofollow"
香港vps rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" href="#" target="_blank" ref="nav" class="w3">牛仔裤</a></dd> <dd><a rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" href="#" target="_blank" ref="nav" class="w4">小家碧玉</a></dd> <dd><a rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" href="#" target="_blank" ref="nav" class="w2">家居</a></dd> </dl> </span></body></html>
实现思路：
利用letter-spacing来解决:
letter-spacing 属性增加或减少字符间的空白（字符间距）。
该属性定义了在文本字符框之间插入多少空间。由于字符字形通常比其字符框要窄，指定长度值时，会调整字母之间通常的间隔。因此，normal 就相当于值为 0。
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