wowakan Hi Rich,
If you looking forward to have similar Grid layout as seen on demo site, You may try the following steps ---
1) Create four articles and assign them in content type settings > articles
. Ref: Screenshot where more article could be selected
2) Creating articles : Duplicate the initial article with HTML output added as below :
<p><img style="display: block; margin-left: auto; margin-right: auto;" src="images/democontent/services/cloudyrain2.png" alt="" />Cras nec lorem eget ligula varius aliquet at et mi. Fusce id quam in justo suscipit porta. Fusce non nisl nunc, id vestibulum augue. Donec interdum sapien vitae sem condimentum vel adipiscing leo cons.</p>
Note : Thereafter, Change the image reference and content accordingly for other articles
You may kindly let me know when completed with above steps in order to suggest further 🙂
As per the HTML structuring of current article assigned, It wont appear right as you already have grid system robust functionality coming from module layout settings so adding more grid classes in article would instead deteriorate the appearence