Please use the following in Theme Options -> Custom CSS
margin-bottom: 0px !important;
margin-top: 0px !important;
padding-bottom: 0px !important;
padding-top: 0px !important;
You can change the margin-top and margin-bottom ‘s 0px value to a larger number such as 5px to increase the spacing.
Please clear your cache plugin’s cache content after you had added the above mentioned codes.