It is copied from others.
The modified effect is as follows:
Custom CSS for the backend:
About the black background and displaying server CPU information effects:
You need to change header.html and menu.html in the template/common/ folder of the Docker container; at the same time, you need to change home.html in the template/theme-default/ folder. The general modification idea is as follows:
<i class="dropdown icon"></i>change to<i class="dropdown icon" style="color:#ffffff"></i>
And
@#server.Name + (server.live?'':'[{{tr "Offline"}}]')#@change to<font color="#dddddd">@#server.Name + (server.live?'':'[{{tr "Offline"}}]')#@</font>
In general, you need to change the text display part to white and change the background and top menu to black.