solved: [https://github.com/michmich/magicmirror/wiki/configuring-the-raspberry-pi#enable-the-open-gl-driver-to-decrease-electrons-cpu-usage](link url) --> ```
As was mentioned in the forums you can also use the fake kms driver instead.

And add the following line to /boot/config.txt:

dtoverlay=vc4-fkms-v3d

Re: [MMM-RTSPStream] - Video Streaming from Live Feeds & Security Cameras

Hi, I have problems with the activation of the open-gl driver which is advised for MM 2.4.1. Without dtoverlay=vc4-kms-v3d everything works as expected. With open-gl enabled in config.txt I got no Picture, even on terminal with omxplayer directly…

Ah, now I understand. Many Thanks!

@Mykle1 said in MMM-WunderGround24Hours: How to set transparent background?:

html {
background: none;
}

still not working with modifikation in custom.css… If I change it in Main.css in the module it self it works fine.

pi@MagicMirror2:/home/pi/MagicMirror/css# cat custom.css

/*****************************************************
 * Magic Mirror                                      *
 * Custom CSS                                        *
 *                                                   *
 * By Michael Teeuw http://michaelteeuw.nl           *
 * MIT Licensed.                                     *
 *                                                   *
 * Add any custom CSS below.                         *
 * Changes to this files will be ignored by GIT.     *
 *****************************************************/

html {
  background: none;
}

pi@MagicMirror2:/home/pi/MagicMirror/modules/MMM-WunderGround24Hours/public/css# head main.css
body, html {
        background: #000;
        padding: 0px;
        margin: 0px;
        width:100%;
        height: 100%;

        letter-spacing: -2px;
        color: #fff;
        font-size: 75px;

@doubleT: Thx. “background: none;” is working in the main.css file. I deleted the whole “background: #000;” entry which was not working…

I don’t understand why my /home/pi/MagicMirror/css/custom.css is not working :-(

/*****************************************************
 * Magic Mirror                                      *
 * Custom CSS                                        *
 *                                                   *
 * By Michael Teeuw http://michaelteeuw.nl           *
 * MIT Licensed.                                     *
 *                                                   *
 * Add any custom CSS below.                         *
 * Changes to this files will be ignored by GIT. *
 *****************************************************/

 body, html {
        background: none;
 }

Hi,

I want to use mm2 as digital picture frame with background images from MMM-RandomPhoto. Everything look/works fine but mm module https://github.com/thobach/MMM-WunderGround24Hours shows black background. How can I make it transparent like the other modules?

Thx