FuckButtons Theme/CSS-Code! This is a Discord Custom CSS code or Theme to remove certain annoying buttons, such as the Nitro Gift, Stickers, GIFS, Apps or the Voice Chat User Area's Activity button. You can edit the code to remove ones you don't want removed.

FUCKBUTTONS.theme.css

/**
 * @name FUCK BUTTONS Theme
 * @author OrieDargon
 * @version 3.3
 * @description This is a CSS code or Theme for Discord to remove certain annoying buttons, such as the Nitro Gift, Stickers, GIFS, Apps or the Voice Chat User Area's Activity button. You can edit the code to remove ones you don't want removed.
 * @source https://gist.github.com/OrieDargon/220ec8eee4bd6ae1da043ca6f3f0cf9d
*/

/*This project is inspired by cheesits456's theme of a similar function, called "Remove Buttons" https://gist.github.com/cheesits456/41d659f932b5a574b5dfb9b391a4506e*/
/*They had not updated their theme in a few years, and with all the the new discord UI updates, I decided to figure out how to alter it in a way that works now with the help of the comment thread.*/
/*I'm not great at CSS code, so I might not be able to update this all the time. Lemme know if there are any issues, or if there's any buttons I should add optionally*/



/*You may remove or comment out any bit of code you want, if you would prefer to have certain buttons.*/

/*The code below removes the Sticker Picker button in the right of the chat box.*/
[class$="buttons"] div[aria-label="Open sticker picker"] {
    display: none;
}

/*The code below removes the GIF Picker button in the right of the chat box.*/
[class$="buttons"] div[aria-label="Open GIF picker"] {
    display: none;
}

/*The code below removes the Nitro Gift button in the right of the chat box.*/
[class$="buttons"] div[aria-label="Send a gift"] {
    display: none;
}

/*The code below removes the "Apps" button in the right of the chat box.*/
[class$="buttons"] div[aria-label="Apps"] {
    display: none;
}

/*The code below removes the "Apps" button in the bottom left user area, when in a voice call. You can also still access this if needed if you click into the voice call.*/
[class$="actionButtons"] button:nth-child(5) {
    display: none;
}

/*Voice Chat "Invite to Voice" member-like popup*/
div[aria-label="Voice Invite Suggestions, press to dismiss"] {
    display: none;
}
/*Dev Note: found in f2170ce498f1df46-animation for me*/

Works like a charm!