Show a watermark in the Seq navbar, e.g. "production", "my app", etc.

watermark.css

// Paste into Settings > Theme, <refresh>

.masthead h1:after {
    content: 'PRODUCTION';
    position: absolute;
    top: 10px;
    left: 110px;
    color: white;
    opacity: 0.4;
    font-size: 16px;
}