diff --git a/themes/yunohost-docs/css/custom.css b/themes/yunohost-docs/css/custom.css
index a83f1801..d830c2db 100644
--- a/themes/yunohost-docs/css/custom.css
+++ b/themes/yunohost-docs/css/custom.css
@@ -21,6 +21,13 @@ img.inline {
  vertical-align: middle;
 }
 
+img.center {
+ display: block;
+ margin:5px 15px 5px 5px;
+ margin-left: auto;
+ margin-right: auto;
+}
+
 .nomargin * {
  margin: 0px auto;
 }