Hi auludag,
BD mostly takes on the look of your theme–but in doing so, not everyone is happy with the way every element looks. That’s why we support custom CSS to override that.
We recommend reading through this article about custom CSS with BD. Here is an article about how to use custom CSS with Business Directory in a way that doesn’t get overwritten on upgrade of BD: http://businessdirectoryplugin.com/support-forum/faq/how-to-use-custom-styles-with-bd-2-1/
You’ll need to use a tool like Firebug or Chrome Developer Tools to find the right CSS selectors for buttons. Each button has a different ID and you probably want to target only certain buttons. If you want to get them all (which will affect the entire site), you can try the class “button” but I’d recommend the ID approach.
If you’re not familiar with CSS selectors, I’d recommend this tutorial:
http://code.tutsplus.com/tutorials/the-30-css-selectors-you-must-memorize–net-16048
thanks for fast and detailed answer. ye i was checking to find with those tools you mentioned. but i couldn’t find it. then i looked it again. and i found the culprit. it was a plugin related to bbpress, it was effecting the button changes not only bbpres- wide but site-wide.
i uninstalled the plugin now selectors, ids and snippets are giving response in the developer tools like expected.
have a nice day.