Modifying or hiding close buttons on invitations

The close button on an invitation can be modified to another color, size, or position in the CSS file, as follows:

.xDix { top: 15px !important; /* move down */ right: 21px !important; /* move left */ color: #5081ff !important' /*change color*/ font-size: 26px !important; cursor: pointer; background: red !important; /* change background color */ }