<p>Query parameters are in the format of key-value pairs. They are appended after your embed url such that it would look like so: <br><em>https://titanembeds.com/embed/1234567890<strong>?css=1&theme=DiscordDark&theme=DiscordDark</strong></em></p>
Instead of having the top channel as the first channel your users see, you may change it. Enable Discord's Developer mode in the Appearances tab of the User Settings and copy the channel ID. <br>