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How to hide buttons in the mobile chat menu?
You may hide buttons in the mobile menu view.
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Hide Full Screen button.opt-full-screen { display: none; }
Hide QR code buttons.qr-li { display: none; }
Hide small size fonts button.opt-sm-font { display: none; }
Hide big font button.opt-big-font { display: none; }
Hide pin the position button.pin-li { display: none; }
Hide sound on/off button.sound-li { display: none; }
To know how to edit the mobile CSS, refer to this link.