Change the extension’s look & feel

You can change the look & feel by copying the files tx_realty_pi1.tpl.css and tx_realty_pi1.tpl.htm from the folder typo3conf/ext/realty/pi1/ and setting the TS setup variable plugin.tx_realty_pi1.templateFile and the constant plugin.tx_realty_pi1.cssFile to point to the copies. Then you can modify the copies. You can also change only the HTML template or the CSS file if that suffices to achieve the look & feel you want.

Note: Never edit the original HTML or CSS file within the extension directory itself! If you do this, upgrading the extension will overwrite any changes you have made to the files.

Also have a look at the reference to see how the extension can be configured using TS setup and flexforms.