how do i list categories from left to right?

hi, i have a static page with a list of categories on it using the wp_list_cats function. you can see the page at:

https://squattheplanet.com/wordpress/stories/

what im trying do do is make the categories list themselves from left to right instead of up and down, preferably with a comma and space between each one. is there a way to do this? i tried searching the forums and codex for this but i cant find whatever variable might do this.

also, i can’t figure out why there’s always bullets next to the categories.

thanks!