diff --git a/Responsive Web Design Principles/03_use-a-retina-image-for-higher-resolution-displays.html b/Responsive Web Design Principles/03_use-a-retina-image-for-higher-resolution-displays.html
new file mode 100644
index 0000000..f550992
--- /dev/null
+++ b/Responsive Web Design Principles/03_use-a-retina-image-for-higher-resolution-displays.html	
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="UTF-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Lession 03</title>
+    <style>
+        img {
+            height: 100px;
+            width: 100px;
+        }
+    </style>
+</head>
+
+<body>
+    <img src="https://s3.amazonaws.com/freecodecamp/FCCStickers-CamperBot200x200.jpg" alt="freeCodeCamp sticker that says 'Because CamperBot Cares'">
+</body>
+
+</html>
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diff --git a/Responsive Web Design Principles/04_make-typography-responsive.html b/Responsive Web Design Principles/04_make-typography-responsive.html
new file mode 100644
index 0000000..350d3ba
--- /dev/null
+++ b/Responsive Web Design Principles/04_make-typography-responsive.html	
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="UTF-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Lession 04</title>
+    <style>
+        h2 {
+            width: 80vw;
+        }
+        
+        p {
+            width: 75vmin;
+        }
+    </style>
+</head>
+
+<body>
+    <h2>Importantus Ipsum</h2>
+    <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus quis tempus massa. Aenean erat nisl, gravida vel vestibulum cursus, interdum sit amet lectus. Sed sit amet quam nibh. Suspendisse quis tincidunt nulla. In hac habitasse platea dictumst.
+        Ut sit amet pretium nisl. Vivamus vel mi sem. Aenean sit amet consectetur sem. Suspendisse pretium, purus et gravida consequat, nunc ligula ultricies diam, at aliquet velit libero a dui.</p>
+</body>
+
+</html>
\ No newline at end of file
