diff --git a/css/style.css b/css/style.css
index 20b5581..6c607c7 100644
--- a/css/style.css
+++ b/css/style.css
@@ -1,18 +1,20 @@
-body
+body{
   font-size: 14px;
 }
-
+/* define nav bar*/
 nav {
-  background color: yellow;
+  background-color: yellow;
   height: 100px;
-  margin-top: -10px;
+  margin-top: 10px;
   position: fixed;
   width: 100%;
+}
 
-
+/* div element section */
 section {
   margin: 0 auto;
-  width: 60%;
+  width: 100%;
+  padding-top: 110px;
 }
 
 h1 {
@@ -21,8 +23,8 @@ h1 {
 }
 
 .example, h3 {
-  padding-top: 30px;
-  text-align center
+  padding-top: 40px;
+  text-align:center;
 }
 
 h3 {
@@ -32,5 +34,13 @@ h3 {
 .element {
   background-color: green;
   height: 100px;
-  margin 10px 0;
+  margin: 10px 0;
   width: 100%;
+}
+/* change last 3 background to pink */
+.element1 {
+  background-color: pink;
+  height: 100px;
+  margin: 10px 0;
+  width: 100%;
+}
diff --git a/index.html b/index.html
index 8848434..406ca3b 100644
--- a/index.html
+++ b/index.html
@@ -3,6 +3,7 @@
   <head>
     <meta charset="utf-8">
     <title></title>
+    <link rel="stylesheet" type="text/css" href="reset.css">
     <link rel="stylesheet" href="css/style.css">
   </head>
   <body>
@@ -28,13 +29,13 @@ <h3>This is text for a div element</h3>
       <div class="element">
         <h3>This is text for a div element</h3>
       </div>
-      <div class="element">
+      <div class="element1">
         <h3>This is text for a div element</h3>
       </div>
-      <div class="element">
+      <div class="element1">
         <h3>This is text for a div element</h3>
       </div>
-      <div class="element">
+      <div class="element1">
         <h3>This is text for a div element</h3>
       </div>
     </section>
diff --git a/reset.css b/reset.css
new file mode 100644
index 0000000..af94440
--- /dev/null
+++ b/reset.css
@@ -0,0 +1,48 @@
+/* http://meyerweb.com/eric/tools/css/reset/ 
+   v2.0 | 20110126
+   License: none (public domain)
+*/
+
+html, body, div, span, applet, object, iframe,
+h1, h2, h3, h4, h5, h6, p, blockquote, pre,
+a, abbr, acronym, address, big, cite, code,
+del, dfn, em, img, ins, kbd, q, s, samp,
+small, strike, strong, sub, sup, tt, var,
+b, u, i, center,
+dl, dt, dd, ol, ul, li,
+fieldset, form, label, legend,
+table, caption, tbody, tfoot, thead, tr, th, td,
+article, aside, canvas, details, embed, 
+figure, figcaption, footer, header, hgroup, 
+menu, nav, output, ruby, section, summary,
+time, mark, audio, video {
+	margin: 0;
+	padding: 0;
+	border: 0;
+	font-size: 100%;
+	font: inherit;
+	vertical-align: baseline;
+}
+/* HTML5 display-role reset for older browsers */
+article, aside, details, figcaption, figure, 
+footer, header, hgroup, menu, nav, section {
+	display: block;
+}
+body {
+	line-height: 1;
+}
+ol, ul {
+	list-style: none;
+}
+blockquote, q {
+	quotes: none;
+}
+blockquote:before, blockquote:after,
+q:before, q:after {
+	content: '';
+	content: none;
+}
+table {
+	border-collapse: collapse;
+	border-spacing: 0;
+}
\ No newline at end of file
