Update spack_manager_structure.md

docs/general/spack_manager_structure.md

@@ -3,17 +3,21 @@
 Spack-Manager is a Spack extension that provides a way for software applications
 to configure their usage of spack. 
 
-<img src="../images/application-workflow.png" width="100%">
+<div>
+  <img src="../images/application-workflow.png" width="100%">
 
-<p>An example of generalized infrastructure requirements that are common across HPC and scientific computing applications. Spack-Manager's goal is to empower these types of infrastructures while still allowing application teams to drive the details.</p>
+  <p><em>An example of generalized infrastructure requirements that are common across HPC and scientific computing applications. Spack-Manager's goal is to empower these types of infrastructures while still allowing application teams to drive the details.</em></p>
+</div>
 
 The code of Spack-Manager is independent of each individual application and each
 application code needs to configure a Spack-Manager `Project` to tell Spack-Manager how to work
 with their application.
 
-<img src="../images/Spack-Manager-Org.png" width="50%">
+<div>
+  <img src="../images/Spack-Manager-Org.png" width="50%">
 
-<p>Spack-Manager is designed to provide an abstraction that can support multiple application teams. Each team develops a Project that can be registered with an instance of Spack-Manager.</p>
+  <p><em>Spack-Manager is designed to provide an abstraction that can support multiple application teams. Each team develops a Project that can be registered with an instance of Spack-Manager.</em></p>
+</div>
 
 A `Project` at its core is simply a collection of [spack configuration files](https://spack.readthedocs.io/en/latest/configuration.html),
 and [spack package repositories](https://spack.readthedocs.io/en/latest/repositories.html).
@@ -37,6 +41,8 @@ spack-manager:
 
 Information on configuring a new `Project` can be found in the system administrator profile documentation [here](https://sandialabs.github.io/spack-manager/user_profiles/system_admins/creating_a_project.html).
 
-<img src="../images/ApplicationSpace.png" width="100%">
+<div>
+  <img src="../images/ApplicationSpace.png" width="100%">
 
-<p>The end goal of many code application and DevOps teams is to efficiently span the space of platform permutations and project variations.</p>
+  <p><em>The end goal of many code application and DevOps teams is to efficiently span the space of platform permutations and project variations.</em>em></p>
+</div>