Fullscreen WhatsApp by PennyJim

/* ==UserStyle==
@name           Fullscreen WhatsApp
@namespace      github.com/openstyles/stylus
@version        2
@description    Make WhatsApp fullscreen
@author         PennyJim
==/UserStyle== */
@-moz-document url("https://web.whatsapp.com/") {
    /*The main div of the app*/
    #app div:has(> header:not(header ~ * > header)) {
        position: fixed;
        top: 0;
        height: 100%;
        width: 100%;
        max-width: 100%;
        
        /*The list of chats*/
        > div:nth-child(4) {
            flex: 0 0 25em;
            max-width: 25em;
        }
        
        /*The pane that describes how the pane to the right of chat is placed (I think)*/
        > div:nth-child(2) {
            max-width: 84em; /* why is the fontsize for this element different?*/
        }
        
    }
    
    /*Remove meta ai shit*/
    [aria-label='Meta AI'] {
        display: none;
    }
}