diff --git a/_sass/_04_settings_global.scss b/_sass/_04_settings_global.scss
index d7e0f69..3d9516b 100644
--- a/_sass/_04_settings_global.scss
+++ b/_sass/_04_settings_global.scss
@@ -1450,3 +1450,11 @@ $topbar-divider-border-top: solid 0px scale-color($topbar-bg-color, $lightness:
 // $include-table-visibility-classes: true;
 // $include-legacy-visibility-classes: true;
 // $include-accessibility-classes: true;
+
+// Plain markdown center
+
+.center-image
+{
+    margin: 0 auto;
+    display: block;
+}