adds images and normalize

grid.css

@@ -286,7 +286,7 @@ img {
 .example img { margin: 0; }
 
 .fragmentation {
-  background-image: url("/images/grid/fragmentation.png");
+  background-image: url("/images/fragmentation.png");
   background-size: cover;
   min-height: 250px;
 }

index.html

@@ -28,13 +28,13 @@
           <a href="/grid"><h1>grid</h1></a>
           <p>A simple guide to responsive design.<br>Made by <a href="/" target="_blank">Adam Kaplan</a>.</p>
         </div>
-        <img src="/images/grid/mobile.png" alt="Intro" class="mobile animated fadeInUp">
+        <img src="/images/mobile.png" alt="Intro" class="mobile animated fadeInUp">
       </div>
     </header>
 
     <section>
       <div class='container'>
-        <img src="/images/grid/mobile-first.png" alt="Mobile First" class="rwd">
+        <img src="/images/mobile-first.png" alt="Mobile First" class="rwd">
         <h1>Why bother with responsive?</h1>
         <p>We want our websites to be useable on all devices by responding to
         the user’s behavior, screen size and screen orientation.</p>
@@ -63,7 +63,7 @@
         <hr>
         <blockquote>
           <p>By assuming a flexible but simple layout by default, you can better guard against browsers—with viewports wide
-          and small—that aren’t quite capable of the full responsive layout. So when we’re talking about layout, “mobile first” 
+          and small—that aren’t quite capable of the full responsive layout. So when we’re talking about layout, “mobile first”
           really means “progressive enhancement.”</p>
           <cite>—Ethan Marcotte</cite>
         </blockquote>
@@ -72,7 +72,7 @@
 
     <section class="example quote remove-padding">
       <div class="container">
-        <img src="/images/grid/small-large.png" alt="Mobile First">
+        <img src="/images/small-large.png" alt="Mobile First">
       </div>
     </section>
 
@@ -111,7 +111,7 @@
 
     <section class="example">
       <div class="container">
-        <img src="/images/grid/box-model.png" alt="Box Model">
+        <img src="/images/box-model.png" alt="Box Model">
       </div>
     </section>
 
@@ -124,25 +124,25 @@
 
         <div class="row clearfix">
           <div class="column fourth">
-            <img src="/images/grid/content.png" alt="content">
+            <img src="/images/content.png" alt="content">
             <h3 class="content">Content</h3>
             <p>The content of the box, where text and images appear.</p>
           </div>
 
           <div class="column fourth">
-            <img src="/images/grid/padding.png" alt="padding">
+            <img src="/images/padding.png" alt="padding">
             <h3 class="padding">Padding</h3>
             <p>Clears an area around the content.</p>
           </div>
 
           <div class="column fourth">
-            <img src="/images/grid/border.png" alt="border">
+            <img src="/images/border.png" alt="border">
             <h3 class="border">Border</h3>
             <p>A border that goes around the padding.</p>
           </div>
 
           <div class="column fourth">
-            <img src="/images/grid/margin.png" alt="margin">
+            <img src="/images/margin.png" alt="margin">
             <h3 class="margin">Margin</h3>
             <p>Clears an area around the border.</p>
           </div>
@@ -170,13 +170,13 @@
 
         <div class="row clearfix">
           <div class="column half">
-            <img src="/images/grid/without-box-model.png" alt="Without Box Model">
+            <img src="/images/without-box-model.png" alt="Without Box Model">
             <h3>Without box-sizing: border-box</h3>
             <p>Margin, borders and padding are drawn outside the set width of your content.</p>
           </div>
 
           <div class="column half">
-            <img src="/images/grid/with-box-model.png" alt="With Box Model">
+            <img src="/images/with-box-model.png" alt="With Box Model">
             <h3>With box-sizing: border-box</h3>
             <p>Borders and padding are drawn inside the set width of your content. The margin is drawn outside.</p>
           </div>
@@ -198,7 +198,7 @@
 
     <section class="example">
       <div class="container">
-        <img src="/images/grid/container.png" alt="Container">
+        <img src="/images/container.png" alt="Container">
       </div>
     </section>
 

normalize.css

@@ -0,0 +1,423 @@
+/*! normalize.css v3.0.0 | MIT License | git.io/normalize */
+
+/**
+ * 1. Set default font family to sans-serif.
+ * 2. Prevent iOS text size adjust after orientation change, without disabling
+ *    user zoom.
+ */
+
+html {
+  font-family: sans-serif; /* 1 */
+  -ms-text-size-adjust: 100%; /* 2 */
+  -webkit-text-size-adjust: 100%; /* 2 */
+}
+
+/**
+ * Remove default margin.
+ */
+
+body {
+  margin: 0;
+}
+
+/* HTML5 display definitions
+   ========================================================================== */
+
+/**
+ * Correct `block` display not defined in IE 8/9.
+ */
+
+article,
+aside,
+details,
+figcaption,
+figure,
+footer,
+header,
+hgroup,
+main,
+nav,
+section,
+summary {
+  display: block;
+}
+
+/**
+ * 1. Correct `inline-block` display not defined in IE 8/9.
+ * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
+ */
+
+audio,
+canvas,
+progress,
+video {
+  display: inline-block; /* 1 */
+  vertical-align: baseline; /* 2 */
+}
+
+/**
+ * Prevent modern browsers from displaying `audio` without controls.
+ * Remove excess height in iOS 5 devices.
+ */
+
+audio:not([controls]) {
+  display: none;
+  height: 0;
+}
+
+/**
+ * Address `[hidden]` styling not present in IE 8/9.
+ * Hide the `template` element in IE, Safari, and Firefox < 22.
+ */
+
+[hidden],
+template {
+  display: none;
+}
+
+/* Links
+   ========================================================================== */
+
+/**
+ * Remove the gray background color from active links in IE 10.
+ */
+
+a {
+  background: transparent;
+}
+
+/**
+ * Improve readability when focused and also mouse hovered in all browsers.
+ */
+
+a:active,
+a:hover {
+  outline: 0;
+}
+
+/* Text-level semantics
+   ========================================================================== */
+
+/**
+ * Address styling not present in IE 8/9, Safari 5, and Chrome.
+ */
+
+abbr[title] {
+  border-bottom: 1px dotted;
+}
+
+/**
+ * Address style set to `bolder` in Firefox 4+, Safari 5, and Chrome.
+ */
+
+b,
+strong {
+  font-weight: bold;
+}
+
+/**
+ * Address styling not present in Safari 5 and Chrome.
+ */
+
+dfn {
+  font-style: italic;
+}
+
+/**
+ * Address variable `h1` font-size and margin within `section` and `article`
+ * contexts in Firefox 4+, Safari 5, and Chrome.
+ */
+
+h1 {
+  font-size: 2em;
+  margin: 0.67em 0;
+}
+
+/**
+ * Address styling not present in IE 8/9.
+ */
+
+mark {
+  background: #ff0;
+  color: #000;
+}
+
+/**
+ * Address inconsistent and variable font size in all browsers.
+ */
+
+small {
+  font-size: 80%;
+}
+
+/**
+ * Prevent `sub` and `sup` affecting `line-height` in all browsers.
+ */
+
+sub,
+sup {
+  font-size: 75%;
+  line-height: 0;
+  position: relative;
+  vertical-align: baseline;
+}
+
+sup {
+  top: -0.5em;
+}
+
+sub {
+  bottom: -0.25em;
+}
+
+/* Embedded content
+   ========================================================================== */
+
+/**
+ * Remove border when inside `a` element in IE 8/9.
+ */
+
+img {
+  border: 0;
+}
+
+/**
+ * Correct overflow displayed oddly in IE 9.
+ */
+
+svg:not(:root) {
+  overflow: hidden;
+}
+
+/* Grouping content
+   ========================================================================== */
+
+/**
+ * Address margin not present in IE 8/9 and Safari 5.
+ */
+
+figure {
+  margin: 1em 40px;
+}
+
+/**
+ * Address differences between Firefox and other browsers.
+ */
+
+hr {
+  -moz-box-sizing: content-box;
+  box-sizing: content-box;
+  height: 0;
+}
+
+/**
+ * Contain overflow in all browsers.
+ */
+
+pre {
+  overflow: auto;
+}
+
+/**
+ * Address odd `em`-unit font size rendering in all browsers.
+ */
+
+code,
+kbd,
+pre,
+samp {
+  font-family: monospace, monospace;
+  font-size: 1em;
+}
+
+/* Forms
+   ========================================================================== */
+
+/**
+ * Known limitation: by default, Chrome and Safari on OS X allow very limited
+ * styling of `select`, unless a `border` property is set.
+ */
+
+/**
+ * 1. Correct color not being inherited.
+ *    Known issue: affects color of disabled elements.
+ * 2. Correct font properties not being inherited.
+ * 3. Address margins set differently in Firefox 4+, Safari 5, and Chrome.
+ */
+
+button,
+input,
+optgroup,
+select,
+textarea {
+  color: inherit; /* 1 */
+  font: inherit; /* 2 */
+  margin: 0; /* 3 */
+}
+
+/**
+ * Address `overflow` set to `hidden` in IE 8/9/10.
+ */
+
+button {
+  overflow: visible;
+}
+
+/**
+ * Address inconsistent `text-transform` inheritance for `button` and `select`.
+ * All other form control elements do not inherit `text-transform` values.
+ * Correct `button` style inheritance in Firefox, IE 8+, and Opera
+ * Correct `select` style inheritance in Firefox.
+ */
+
+button,
+select {
+  text-transform: none;
+}
+
+/**
+ * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
+ *    and `video` controls.
+ * 2. Correct inability to style clickable `input` types in iOS.
+ * 3. Improve usability and consistency of cursor style between image-type
+ *    `input` and others.
+ */
+
+button,
+html input[type="button"], /* 1 */
+input[type="reset"],
+input[type="submit"] {
+  -webkit-appearance: button; /* 2 */
+  cursor: pointer; /* 3 */
+}
+
+/**
+ * Re-set default cursor for disabled elements.
+ */
+
+button[disabled],
+html input[disabled] {
+  cursor: default;
+}
+
+/**
+ * Remove inner padding and border in Firefox 4+.
+ */
+
+button::-moz-focus-inner,
+input::-moz-focus-inner {
+  border: 0;
+  padding: 0;
+}
+
+/**
+ * Address Firefox 4+ setting `line-height` on `input` using `!important` in
+ * the UA stylesheet.
+ */
+
+input {
+  line-height: normal;
+}
+
+/**
+ * It's recommended that you don't attempt to style these elements.
+ * Firefox's implementation doesn't respect box-sizing, padding, or width.
+ *
+ * 1. Address box sizing set to `content-box` in IE 8/9/10.
+ * 2. Remove excess padding in IE 8/9/10.
+ */
+
+input[type="checkbox"],
+input[type="radio"] {
+  box-sizing: border-box; /* 1 */
+  padding: 0; /* 2 */
+}
+
+/**
+ * Fix the cursor style for Chrome's increment/decrement buttons. For certain
+ * `font-size` values of the `input`, it causes the cursor style of the
+ * decrement button to change from `default` to `text`.
+ */
+
+input[type="number"]::-webkit-inner-spin-button,
+input[type="number"]::-webkit-outer-spin-button {
+  height: auto;
+}
+
+/**
+ * 1. Address `appearance` set to `searchfield` in Safari 5 and Chrome.
+ * 2. Address `box-sizing` set to `border-box` in Safari 5 and Chrome
+ *    (include `-moz` to future-proof).
+ */
+
+input[type="search"] {
+  -webkit-appearance: textfield; /* 1 */
+  -moz-box-sizing: content-box;
+  -webkit-box-sizing: content-box; /* 2 */
+  box-sizing: content-box;
+}
+
+/**
+ * Remove inner padding and search cancel button in Safari and Chrome on OS X.
+ * Safari (but not Chrome) clips the cancel button when the search input has
+ * padding (and `textfield` appearance).
+ */
+
+input[type="search"]::-webkit-search-cancel-button,
+input[type="search"]::-webkit-search-decoration {
+  -webkit-appearance: none;
+}
+
+/**
+ * Define consistent border, margin, and padding.
+ */
+
+fieldset {
+  border: 1px solid #c0c0c0;
+  margin: 0 2px;
+  padding: 0.35em 0.625em 0.75em;
+}
+
+/**
+ * 1. Correct `color` not being inherited in IE 8/9.
+ * 2. Remove padding so people aren't caught out if they zero out fieldsets.
+ */
+
+legend {
+  border: 0; /* 1 */
+  padding: 0; /* 2 */
+}
+
+/**
+ * Remove default vertical scrollbar in IE 8/9.
+ */
+
+textarea {
+  overflow: auto;
+}
+
+/**
+ * Don't inherit the `font-weight` (applied by a rule above).
+ * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
+ */
+
+optgroup {
+  font-weight: bold;
+}
+
+/* Tables
+   ========================================================================== */
+
+/**
+ * Remove most spacing between table cells.
+ */
+
+table {
+  border-collapse: collapse;
+  border-spacing: 0;
+}
+
+td,
+th {
+  padding: 0;
+}