dialog { border: none; padding: 0; margin: 0; width: 100vw; height: 100vh; max-width: 100%; max-height: 100%; background: #FFF; overflow: hidden; }
dialog::backdrop { background-color: rgba(0, 0, 0, 0.8); }

#kodMieszkania { width: 100%; height: 100%; border: none; display: block; }

.close-btn { position: fixed; top: 30px; right: 30px; padding: 14px 40px; background: #3c3c3b; color: #FFF; border-radius: 6px; cursor: pointer; box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    z-index: 99999; transition: all 0.5s ease; border: 0; }
.close-btn:hover { background: #beaa83; }
.close-btn:focus { outline: none; }

@media screen and (max-width: 599px) {
	.close-btn { top: 20px; left: 20px; right: auto; }	
}