Z-Index Changing

Fixed a number of bugs in the z-index change code so that it now works.
-css elements do not use caps (This way my mistake, I was accidentally
using camelCase). zIndex has changed to z-index
-When identifying cards outside of specifically targeting an index in
the array, the card_id already contains ‘card’. This meant that the
previous code was looking for element “#cardcard[x]”, instead of
“#card[x]”.