Integrate widget into site and customise CSS to match style of our site

We need to install and integrate a calendar and availability widget provided by Rezdy on our travel site. We currently have in place our own calendar that utilises the Rezdy API, however, we are looking to replace this with the widget in order to improve some performance issues. The widget allows some custom CSS design which we would like to utlise to seamlessly match the look and feel of our site. Currently we are using the Rezdy API to pull tour information in our search and results pages. We will use the widget as part of the start of the first step in the booking process (the user selects the number of guest, date and time) the user then hits "book now" on the widget which will take the user to our booking form which again uses the Rezdy API. We need the widget to seamlessly working within this current set up. Requirements: - widget to be integrated in way the talks to current API integration of Rezdy booking software on our Wordpress site - custom CSS design based design guide we provide - have the widget successfully and seamlessly function on our search results page and individual tour pages. Images provided showing our current search results page, a rough design of how we would ideally like the widget CSS/design to look. For examples on Rezdy calendar widgets that have been integrated into sites please see: [login to view URL] [login to view URL]