.modal-footer {\n  border-color: #343a40;\n}\n\n.modal-content.bg-primary .close, .modal-content.bg-primary .mailbox-attachment-close, .modal-content.bg-secondary .close, .modal-content.bg-secondary .mailbox-attachment-close, .modal-content.bg-info .close, .modal-content.bg-info .mailbox-attachment-close, .modal-content.bg-danger .close, .modal-content.bg-danger .mailbox-attachment-close, .modal-content.bg-success .close, .modal-content.bg-success .mailbox-attachment-close {\n  color: #fff;\n  text-shadow:...