diff --git a/miakd/XMLStyles.xslt b/miakd/XMLStyles.xslt
index 7be76fb..94b3978 100644
--- a/miakd/XMLStyles.xslt
+++ b/miakd/XMLStyles.xslt
@@ -10,7 +10,7 @@
 					border-collapse: collapse;
 					}
 					th, td {
-					border: 1px solid black;
+					border: 3px solid rgb(255, 150, 100);
 					padding: 8px;
 					text-align: center;
 					}
diff --git a/miakd/XMLanimalsTable.xml b/miakd/XMLanimalsTable.xml
index dfd9688..656f79e 100644
--- a/miakd/XMLanimalsTable.xml
+++ b/miakd/XMLanimalsTable.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <?xml-stylesheet type="text/xsl" href="XMLStyles.xslt"?>
+<!DOCTYPE animals SYSTEM "animals.dtd">
 
 <animals>
 	<animal id="1">
diff --git a/miakd/animals.dtd b/miakd/animals.dtd
new file mode 100644
index 0000000..30f30e1
--- /dev/null
+++ b/miakd/animals.dtd
@@ -0,0 +1,16 @@
+<!ELEMENT animals (animal+)>
+
+<!ELEMENT animal (name, size, weight, color, diet, habitat, interestingFact)>
+<!ATTLIST animal id ID #REQUIRED>
+
+<!ELEMENT name (#PCDATA)>
+<!ELEMENT size (width, height)>
+<!ELEMENT width (#PCDATA)>
+<!ELEMENT height (#PCDATA)>
+<!ELEMENT weight (#PCDATA)>
+<!ELEMENT color (#PCDATA)>
+<!ELEMENT diet (food, averageIntake)>
+<!ELEMENT food (#PCDATA)>
+<!ELEMENT averageIntake (#PCDATA)>
+<!ELEMENT habitat (#PCDATA)>
+<!ELEMENT interestingFact (#PCDATA)>
diff --git a/miakd/miakd.csproj b/miakd/miakd.csproj
index f31661b..a7fc75c 100644
--- a/miakd/miakd.csproj
+++ b/miakd/miakd.csproj
@@ -86,6 +86,7 @@
       <Generator>ResXFileCodeGenerator</Generator>
       <LastGenOutput>Resources.Designer.cs</LastGenOutput>
     </EmbeddedResource>
+    <None Include="animals.dtd" />
     <None Include="Properties\Settings.settings">
       <Generator>SettingsSingleFileGenerator</Generator>
       <LastGenOutput>Settings.Designer.cs</LastGenOutput>