Hi there,
its a JetPack lazy loader problem. They add an inline-block property to the images which causes this. Personally i never use JetPack for this and many many other issues and the bloat it adds. If you still want to use the lazy loader, there are some CSS workarounds, for example add this CSS:
.centered .generate-sections-inside-container {
display: -webkit-box;
display: -ms-flexbox;
display: flex;
-webkit-box-orient: vertical;
-webkit-box-direction: normal;
-ms-flex-direction: column;
flex-direction: column;
-webkit-box-align: center;
-ms-flex-align: center;
align-items: center;
}
And then for any section you want to have all elements centered just add centered
to Custom Classes field in the Sections > Settings > Panel.