A tooltips is a piece of text that pops up when you hover the mouse over a region on a website. If you use the Joomla! back end, for example, tooltips are used to help explain the action of different parameters. The tooltips can add functionality and fun to your site, but just inserting them without styling them accordingly can have an unusable or "just" boring result. And you want to avoid both, I guess...
Template trickery
Template is an essential part of a Joomla site. It's not only simple HTML/CSS/PHP/JS wich let's you show your content, it's a genuine shell with endless of possibilities for success - and failure. There are defined not only how your site will look like for your human visitors, but also for searchengines too. So it's your primary tool in your SEO efforts.
And also it's first line of your defence too. Lots of security holes can be opened with a badly written template! And also, don't forget, that might be the biggest resource hog - so the first place to optimize your site's performance.
More: has a tremendous amount of power built in. You should unleash that, and master it.
A powerful tool to style your site is to use layout overrides to style any MVC compliant component's output in your template. May sound very scary, but shouldn't - a versed Joomla webmaster like you 
will handle the challenge easily.
Before the Joomla 1.5, pagination override was a nearly impossible task. The control the display of items-per-page and the pagination links used with lists of information has become much easier.
The best way to create individual look of your Joomla website, since Joomla 1.5 is to create module overrides. These are special files, placed in your template's directory, used to override the output of your existing modules.
Styling the output of the Joomla was - and is - one of greatest challenges. One of tools making this easier for template developers is the "module chrome" concept/toolset introduced with Joomla 1.0 and constantly evolving ever since.
There may be occasions where you would like to change the way a Joomla! Extension (such as a Component or Module, whether from the Joomla! core or produced by a third party) is displayed on your site. Of course, you could recode the Extension from scratch, but that may be a bit ambitious for you! Thankfully, there is another way.
