>>450
こんな感じで

toolbarbutton.bookmark-item > .toolbarbutton-icon {
margin-inline: 1px !important;
}
toolbarbutton.bookmark-item {
/*max-width: 24px !important;
min-width: 24px !important;*/
margin-right: 0px !important;
margin-left: 0px !important;
}
toolbarbutton.bookmark-item > .toolbarbutton-text {
display: none !important;
}

.menubar-text {
margin-left: 1px !important;
margin-right: 1px !important;
}
#main-menubar > #file-menu {
margin-left: 2px !important;
}