Update docs/assignments/week12.md

docs/assignments/week12.md

@@ -63,20 +63,21 @@
 ![describe what you see in this image](../images/week12/ALGINATE1.gif){ width=400 align=right}
 
 <p style="clear: left;"></p>
-
+<br/>
 
 ### Step
 
 ![describe what you see in this image](../images/week12/alginate2.gif){ width=400 align=left}
 
 <p style="clear: left;"></p>
+<br/>
 
 ### Step
 
 ![describe what you see in this image](../images/week12/alg5.gif){ width=400 align=right}
 
 <p style="clear: left;"></p>
-
+<br/>
 
 
 ### Step