Page names should be what the page route is + Page.
If the pages has the components that are used in that page only, the create a folder _components inside the folder and put the components in that folder. THe components name should be as ComponentName + Component.
Using CSS
If the classNames are being used more than once in a component, then create a variable for that className and use it.
One branch one Issue
Create a branch for each issue itself and work on that issue in that branch only.
Deletion of branch after task completion
Whoever merges the branch should delete the branch after merging it to the main branch.
If the branch is merged, don't work on that branch again. Create a new branch for the new issue.