jellyfin-web/dashboard-ui/css/notifications.css

.btnNotifications{position:relative;-webkit-border-radius:0;border-radius:0}.btnNotificationsInner{color:#fff;font-weight:500;position:absolute;background:#444;top:0;right:0;width:1.6em;height:1.6em;z-index:100000000;display:-webkit-box;display:-webkit-flex;display:flex;-webkit-box-align:center;-webkit-align-items:center;align-items:center;-webkit-box-pack:center;-webkit-justify-content:center;justify-content:center;font-size:80%;-webkit-border-radius:100em;border-radius:100em}.levelNormal{background-color:#43A047}.levelWarning{background-color:#FF7537}.levelError{background-color:#d14836}