/* Logo ZenArt: bianco, senza riquadro, sempre centrato. */
.brand,.chat-brand img{background:transparent!important;padding:0!important;filter:grayscale(1) contrast(2) invert(1);mix-blend-mode:screen;object-fit:contain}.zen-page .brand,.zen-access .brand{margin-left:auto!important;margin-right:auto!important}.topline{position:relative;justify-content:center!important}.topline>a:first-child{display:block}.topline .back{position:absolute;right:0;top:50%;transform:translateY(-50%)}.zen-chat .chat-header{position:relative;justify-content:center}.zen-chat .chat-brand{position:absolute;left:50%;transform:translateX(-50%)}.zen-chat .header-actions{position:absolute;right:0}@media(max-width:640px){.zen-chat .chat-brand b{font-size:14px}.zen-chat .chat-brand img{width:30px}.zen-chat .chat-brand>span>span{display:none}.topline .brand{width:88px}.topline .back{font-size:12px}}