Each page has its own 'slug' which we can use to target it specifically.
You will need some basic knowledge of CSS and we will be adding Custom CSS within 'Lay Options - Custom CSS & HTML:
Within this link you will find information on the 'Developer tools' - you will need to right-click & 'inspect' your homepage.
Here i have inspected my home page:
and found in the opening <body> tag a series of classes, One of them is called : slug-work
So in the 'Custom CSS' area at the top of our Custom CSS & HTML page within Lay Theme's Backend i would add code similar to this:
You must replace the '.slug-work' with the correct slug of your homepage, keeping the .laynav
I hope this helps, let me know how you go & Good luck! :)