diff --git a/content/style.css b/content/style.css
index ece1cf1..c3d02ba 100644
--- a/content/style.css
+++ b/content/style.css
@@ -1,61 +1,121 @@
-@media only screen and (min-width: 721px) {
-	.container{
-		display: grid;
-		grid-template-columns: repeat(3, 1fr);
-		grid-template-rows: 100px;
-		grid-template-columns: 1fr 1fr 1fr;
-		grid-auto-rows: minmax(100px, auto);
-	}	
-
-	div.item-1 {
-		grid-column: 2 / 3;
-		grid-row: 1;
-	}
-	
-	div.item-2 {
-		grid-column: 2 / 3;
-		grid-row: 2;
-	}
-	
-	div.item-3 {
-		grid-column: 2 / 3;
-		grid-row: 3;
-	}
-}
-
-
-@media only screen and (max-width: 720px) {
-	.container{
-		display: grid;
-		grid-template-columns: repeat(1, 1fr);
-		grid-template-rows: 100px;
-		grid-template-columns: 1fr;
-		grid-auto-rows: minmax(100px, auto);
-	}	
-
-	div.item-1 {
-		grid-column: 1 / 1;
-		grid-row: 1;
-	}
-	
-	div.item-2 {
-		grid-column: 1 / 1;
-		grid-row: 2;
-	}
-	
-	div.item-3 {
-		grid-column: 1 / 1;
-		grid-row: 3;
-	}
-}
-
-div.round-border {
-	border: 1px solid;
-	padding: 0.01em 16px;
-	border-radius: 16px;
-}
-
-.bg {
- background-color:#feffef;
- color:#00000;
+/* optimized for desktop users */
+@media only screen and (min-width: 721px) {
+	.container{
+		display: grid;
+		grid-template-columns: repeat(3, 1fr);
+		grid-template-rows: 100px;
+		grid-template-columns: 1fr 1fr 1fr;
+		grid-auto-rows: minmax(100px, auto);
+	}	
+
+	div.item-1 {
+		grid-column: 2 / 3;
+		grid-row: 1;
+	}
+	
+	div.item-2 {
+		grid-column: 2 / 3;
+		grid-row: 2;
+	}
+	
+	div.item-3 {
+		grid-column: 2 / 3;
+		grid-row: 3;
+	}
+}
+
+/* optimized for mobile users */
+@media only screen and (max-width: 720px) {
+	.container{
+		display: grid;
+		grid-template-columns: repeat(1, 1fr);
+		grid-template-rows: 100px;
+		grid-template-columns: 1fr;
+		grid-auto-rows: minmax(100px, auto);
+	}	
+
+	div.item-1 {
+		grid-column: 1 / 1;
+		grid-row: 1;
+	}
+	
+	div.item-2 {
+		grid-column: 1 / 1;
+		grid-row: 2;
+	}
+	
+	div.item-3 {
+		grid-column: 1 / 1;
+		grid-row: 3;
+	}
+}
+
+div.round-border {
+	border: 1px solid;
+	padding: 0.01em 16px;
+	border-radius: 16px;
+}
+
+body {
+ background-color:#feffef;
+ color:#00000;
+}
+
+
+/* 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;
+}
+
+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;
+}
+/* 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;
 }
\ No newline at end of file