Add fitting styles to lumens card and similar

[Neintonine]

When checking out the lumens style I found some components did not fit the semi-3D style, so I wanted to change that :)

Total list of components affected:

• listgroups
• cards
• accordions
• modals
• toasts
• popovers

[thomaspark]

Looks good, can you just fix these CSS lint errors from npm run test?

 333:6   ✖  Expected newline after ","  stylistic/selector-list-comma-newline-after
 333:22  ✖  Expected newline after ","  stylistic/selector-list-comma-newline-after
 333:32  ✖  Expected newline after ","  stylistic/selector-list-comma-newline-after
 338:27  ✖  Expected newline after ","  stylistic/selector-list-comma-newline-after

[Neintonine]

Linting errors fixed :)

[Neintonine]

Had to force push, since I had an incorrect user on the commit, so I wanted to fix it :)