MediaWiki:Common.css

/* CSS placed here will be applied to all skins */
/* Hide "edit / edit source" next to headings everywhere */
.mw-editsection,
.mw-editsection-like {
  display: none !important;
}

/* Hide edit section links */
.mw-editsection,
.mw-editsection-like {
    display: none !important;
}

/* Hide left sidebar completely */
.vector-column-start,
.vector-sidebar-container,
#mw-panel {
    display: none !important;
}

/* Remove Vector width limit and centering */
.mw-page-container,
.mw-content-container,
.vector-page,
.vector-column-end,
#content {
    max-width: none !important;
    width: auto !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
}

/* Push article to full width */
.mw-body {
    margin-left: 0 !important;
    width: calc(100% - 2em) !important;
}
/* Hide breadcrumbs / page history trail */
#breadcrumbs,
#siteSub,
.mw-indicators + .subpages {
    display: none !important;
}