diff --git a/docs/databases.md b/docs/databases.md
index e874767..d65a743 100644
--- a/docs/databases.md
+++ b/docs/databases.md
@@ -68,7 +68,7 @@ There are many databases of many types.
A database could be a single file called `heroes.db`, managed with code in a very efficient way. An example would be SQLite, more about that on a bit.
-
+
### A server database
@@ -80,11 +80,11 @@ In this case, your code would talk to this server application instead of reading
The database could be located in a different server/machine:
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+
Or the database could be located in the same server/machine:
-
+
The most important aspect of these types of databases is that **your code doesn't read or modify** the files containing the data directly.
@@ -98,7 +98,7 @@ In some cases, the database could even be a group of server applications running
In this case, your code would talk to one or more of these server applications running on different machines.
-
+
Most of the databases that work as server applications also support multiple servers in one way or another.
@@ -257,7 +257,7 @@ For example, the table for the teams has the ID `1` for the team `Preventers` an
As these **primary key** IDs can uniquely identify each row on the table for teams, we can now go to the table for heroes and refer to those IDs in the table for teams.
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+
So, in the table for heroes, we use the `team_id` column to define a relationship to the *foreign* table for teams. Each value in the `team_id` column on the table with heroes will be the same value as the `id` column of one row in the table with teams.
diff --git a/docs/db-to-code.md b/docs/db-to-code.md
index 537c583..3d289d7 100644
--- a/docs/db-to-code.md
+++ b/docs/db-to-code.md
@@ -236,8 +236,7 @@ database.execute(
).all()
```
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-
+{class="shadow"}
## ORMs and SQL
@@ -280,7 +279,7 @@ For example this **Relation** or table:
* **Mapper**: this comes from Math, when there's something that can convert from some set of things to another, that's called a "**mapping function**". That's where the **Mapper** comes from.
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+
We could also write a **mapping function** in Python that converts from the *set of lowercase letters* to the *set of uppercase letters*, like this:
diff --git a/docs/install.md b/docs/install.md
index 8ac2e04..129df35 100644
--- a/docs/install.md
+++ b/docs/install.md
@@ -16,11 +16,11 @@ As **SQLModel** is built on top of PostgreSQL (which is also free). But for now we'll stick to SQLite.