userChrome.css

#nav-bar{
  overflow: visible !important;
}
#TabsToolbar{
  padding-inline: 80px !important;
}
#back-button,
#forward-button{
  transform: translateY(calc(0px - var(--tab-min-height) - 2 * var(--tab-block-margin)));
}
#urlbar-container{
  margin-inline-start: -75px !important;
}
#PanelUI-button{
  margin-inline-end: -75px;
}
#PanelUI-button,
#unified-extensions-button{
  transform: translate(-75px, calc(0px - var(--tab-min-height) - 2 * var(--tab-block-margin)));
}

.titlebar-min {display:none!important;}
.titlebar-max {display:none!important;}
.titlebar-restore {display:none!important;}
.titlebar-close {display:none!important;}

.tabbrowser-tab[fadein]:not([pinned]) {
  max-width: none !important;
}


/*====================================================*/

/*  Clean and tight extensions menu */
#unified-extensions-panel #unified-extensions-view {
    max-width: 230px !important;
}

#unified-extensions-view{
    --uei-icon-size: 22px; /*  Change icon size */
    --firefoxcss-number-of-extensions-in-a-row: 3; /*  Increase to the number of icons you want in one row */
}

#unified-extensions-view .panel-header,
#unified-extensions-view .panel-header + toolbarseparator,
#unified-extensions-view .panel-subview-body + toolbarseparator,
#unified-extensions-view #unified-extensions-manage-extensions,
#unified-extensions-view .unified-extensions-item-menu-button.subviewbutton,
#unified-extensions-view .unified-extensions-item-action-button .unified-extensions-item-contents{
    display:none !important;
}

#unified-extensions-view .panel-subview-body {
    padding:3px !important;
}

#unified-extensions-view .unified-extensions-item .unified-extensions-item-icon,
#unified-extensions-view .unified-extensions-item .toolbarbutton-badge-stack {
    margin-inline-end: 0px !important;
}

#unified-extensions-view #overflowed-extensions-list,
#unified-extensions-view #unified-extensions-area,
#unified-extensions-view .unified-extensions-list {
    display: grid !important;
    grid-template-columns: repeat(var(--firefoxcss-number-of-extensions-in-a-row),auto);
    justify-items:center !important;
    align-items:center !important;
}

#unified-extensions-view .unified-extensions-list .unified-extensions-item-action-button {
     margin-left:2px !important;
     margin-right:2px !important;


}
#unified-extensions-view #unified-extensions-area .unified-extensions-item  {
     margin-left:2px !important;
     margin-right:2px !important;

}

#unified-extensions-view .unified-extensions-list .unified-extensions-item,
#unified-extensions-view .unified-extensions-list{
     max-width: max-content;
}

#unified-extensions-view #unified-extensions-area {
    padding-bottom: 3px !important;
    border-bottom: 1px solid #aeaeae33 !important;
}

#unified-extensions-view .unified-extensions-list {
/*     border-top: 1px solid #aeaeae33 !important; */
}

/*===========================================================*/