摘要：
Tooltips are the little yellow text boxes that pop up in some browsers when you hover over elements with title tags. Several developers have created their own custom, stylized tooltipsusing a combination of JavaScript and CSS. However, it is possible to create pure CSS tooltips by using CSS positioning techniques. This technique requires a modern, standardscomplian browser like Firefox to work properly. As such, it is not a technique you would add to your day-to-day arsenal. However, it does dem 阅读全文
摘要：
左右布局，右侧宽度根据左侧宽度自适应 阅读全文