platypush/platypush/backend/http/static/css/source/settings/token.scss

#token {
    .warning {
        background: $notification-error-bg;
        border: $notification-error-border;
        margin: 1em;
        padding: 1em;
        border-radius: 1em;
    }

    .token-container {
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 2em;

        input {
            width: 100%;
        }
    }
}