diff --git a/internal.css b/internal.css
new file mode 100644
index 0000000..c7a8ee7
--- /dev/null
+++ b/internal.css
@@ -0,0 +1,61 @@
+body {
+  background-color:       #B6BDBD;
+  color:                  #000000;
+}
+
+/* code blocks */
+pre {
+  margin-left:            20px;
+  margin-right:           20px;
+  margin-top:             0px;
+  background-color:       white;
+  border-style:           solid;
+  border-color:           #888A85;
+  border-width:           1px;
+  font-size:              11pt;
+  font-family:            monospace;
+}
+pre.commandLine {
+  background-color:       #2E3436;
+  color:                  #C3F097;
+}
+/* in-line code block */
+span.codeBlockInText{
+  background-color:       white;
+  border-color:           black;
+  border-style:           solid;
+  border-width:           1px;
+  font-size:              11pt;
+  font-family:            monospace;
+  padding-left:           5px;
+  padding-right:          5px;
+}
+/* code highlighting */
+span.structure {
+  color:                  #FCAF3E;
+  font-weight:            bold;
+}
+span.primitive {
+  color:                  #729FCF;
+  font-weight:            bold;
+}
+span.className {
+  color:                  #8AE234;
+  font-weight:            bold;
+}
+span.type {
+  color:                  #729FCF;
+}
+span.value {
+  color:                  #C17D11;
+}
+span.function {
+  color:                  #75507B;
+}
+span.name {
+  color:                  #8AE234;
+}
+span.comment {
+  color:                  #888A85;
+}
+