Thank you for contacting us.
If I have understood correctly I am afraid that there is no way you can place one content block into another one. However I believe I am mistaken on this so could you please elaborate further on your request? I am having troubles understanding what exactly are you trying to achieve, so if possible please provide some graphics (screenshots, video etc.) that illustrate this.
Additionally please take a look at our Documentation for the CSS class references and better understanding of the markup output of Sitefinity. I believe you will find this useful.
I hope this helps. Looking forward to your response.
the Telerik team
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