Thank you for waiting.
I have checked your isues.
No1, When you already selected the properties (Vehicles features, location) on the sidebar, it will shows all of items of the properties. See my attachment below.
It is not just showing features, but all the elements you choosed.
No2. I added css code in the Theme Options for you.
No3. I added small js code to fix it, you can re-check.
Thank you so much,