Logo
Either just edit the kallyas-logo.svg from the folder images/ , or open each page and you should see the tag there:
Infocard#
This is a hover panel which appears upon hover mouse event over the logo. It contains anything you want, we though it should be nice to look like a business card with some important info.
Simply add your own content into .infocard div:
<div class="infocard"> ... </div>