To change the thickness of the floor base in Infurnia, you can adjust the height in the Floor Base settings. Here's how:
Go to the Floor Level in 2D view in Infurnia.
Click on the "Floor" icon in the Global Preferences and Settings bar, located in the bottom left corner of your workspace.
In the Floor settings panel, find the "Floor Base" section.
In the "Height" field, you can enter the required thickness for the floor base.
After entering the desired thickness, press "Enter" on your keyboard to apply the changes.
This will set the new thickness for the floor base in your design. Adjusting the floor base thickness allows you to tailor your design to your specific project requirements.