diff --git a/normalize.css b/normalize.css
index 8fd6326..12c6061 100644
--- a/normalize.css
+++ b/normalize.css
@@ -6,6 +6,9 @@
  * 3. Prevent adjustments of font size after orientation changes in IE and iOS.
  */
 
+/* Document
+   ========================================================================== */
+
 html {
   font-family: sans-serif; /* 1 */
   line-height: 1.15; /* 2 */
@@ -13,6 +16,9 @@ html {
   -webkit-text-size-adjust: 100%; /* 3 */
 }
 
+/* Sections
+   ========================================================================== */
+
 /**
  * Remove the margin in all browsers (opinionated).
  */
@@ -21,69 +27,73 @@ body {
   margin: 0;
 }
 
-/* HTML5 display definitions
-   ========================================================================== */
-
 /**
  * Add the correct display in IE 9-.
- * 1. Add the correct display in Edge, IE, and Firefox.
- * 2. Add the correct display in IE.
  */
 
 article,
 aside,
-details, /* 1 */
-figcaption,
-figure,
 footer,
 header,
-main, /* 2 */
-menu,
 nav,
-section,
-summary { /* 1 */
+section {
   display: block;
 }
 
+/**
+ * Correct the font size and margin on `h1` elements within `section` and
+ * `article` contexts in Chrome, Firefox, and Safari.
+ */
+
+h1 {
+  font-size: 2em;
+  margin: 0.67em 0;
+}
+
+/* Grouping content
+   ========================================================================== */
+
 /**
  * Add the correct display in IE 9-.
- */
-
-audio,
-canvas,
-progress,
-video {
-  display: inline-block;
-}
-
-/**
- * Add the correct display in iOS 4-7.
- */
-
-audio:not([controls]) {
-  display: none;
-  height: 0;
-}
-
-/**
- * Add the correct vertical alignment in Chrome, Firefox, and Opera.
- */
-
-progress {
-  vertical-align: baseline;
-}
-
-/**
- * Add the correct display in IE 10-.
  * 1. Add the correct display in IE.
  */
 
-template, /* 1 */
-[hidden] {
-  display: none;
+figcaption,
+figure,
+main { /* 1 */
+  display: block;
 }
 
-/* Links
+/**
+ * Add the correct margin in IE 8.
+ */
+
+figure {
+  margin: 1em 40px;
+}
+
+/**
+ * 1. Add the correct box sizing in Firefox.
+ * 2. Show the overflow in Edge and IE.
+ */
+
+hr {
+  box-sizing: content-box; /* 1 */
+  height: 0; /* 1 */
+  overflow: visible; /* 2 */
+}
+
+/**
+ * 1. Correct the inheritance and scaling of font size in all browsers.
+ * 2. Correct the odd `em` font sizing in all browsers.
+ */
+
+pre {
+  font-family: monospace, monospace; /* 1 */
+  font-size: 1em; /* 2 */
+}
+
+/* Text-level semantics
    ========================================================================== */
 
 /**
@@ -106,9 +116,6 @@ a:hover {
   outline-width: 0;
 }
 
-/* Text-level semantics
-   ========================================================================== */
-
 /**
  * 1. Remove the bottom border in Firefox 39-.
  * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
@@ -138,6 +145,18 @@ strong {
   font-weight: bolder;
 }
 
+/**
+ * 1. Correct the inheritance and scaling of font size in all browsers.
+ * 2. Correct the odd `em` font sizing in all browsers.
+ */
+
+code,
+kbd,
+samp {
+  font-family: monospace, monospace; /* 1 */
+  font-size: 1em; /* 2 */
+}
+
 /**
  * Add the correct font style in Android 4.3-.
  */
@@ -146,16 +165,6 @@ dfn {
   font-style: italic;
 }
 
-/**
- * Correct the font size and margin on `h1` elements within `section` and
- * `article` contexts in Chrome, Firefox, and Safari.
- */
-
-h1 {
-  font-size: 2em;
-  margin: 0.67em 0;
-}
-
 /**
  * Add the correct background and color in IE 9-.
  */
@@ -197,6 +206,24 @@ sup {
 /* Embedded content
    ========================================================================== */
 
+/**
+ * Add the correct display in IE 9-.
+ */
+
+audio,
+video {
+  display: inline-block;
+}
+
+/**
+ * Add the correct display in iOS 4-7.
+ */
+
+audio:not([controls]) {
+  display: none;
+  height: 0;
+}
+
 /**
  * Remove the border on images inside links in IE 10-.
  */
@@ -213,41 +240,6 @@ svg:not(:root) {
   overflow: hidden;
 }
 
-/* Grouping content
-   ========================================================================== */
-
-/**
- * 1. Correct the inheritance and scaling of font size in all browsers.
- * 2. Correct the odd `em` font sizing in all browsers.
- */
-
-code,
-kbd,
-pre,
-samp {
-  font-family: monospace, monospace; /* 1 */
-  font-size: 1em; /* 2 */
-}
-
-/**
- * Add the correct margin in IE 8.
- */
-
-figure {
-  margin: 1em 40px;
-}
-
-/**
- * 1. Add the correct box sizing in Firefox.
- * 2. Show the overflow in Edge and IE.
- */
-
-hr {
-  box-sizing: content-box; /* 1 */
-  height: 0; /* 1 */
-  overflow: visible; /* 2 */
-}
-
 /* Forms
    ========================================================================== */
 
@@ -355,6 +347,16 @@ legend {
   white-space: normal; /* 1 */
 }
 
+/**
+ * 1. Add the correct display in IE 9-.
+ * 2. Add the correct vertical alignment in Chrome, Firefox, and Opera.
+ */
+
+progress {
+  display: inline-block; /* 1 */
+  vertical-align: baseline; /* 2 */
+}
+
 /**
  * Remove the default vertical scrollbar in IE.
  */
@@ -411,3 +413,47 @@ textarea {
   -webkit-appearance: button; /* 1 */
   font: inherit; /* 2 */
 }
+
+/* Interactive
+   ========================================================================== */
+
+/*
+ * Add the correct display in IE 9-.
+ * 1. Add the correct display in Edge, IE, and Firefox.
+ */
+
+details, /* 1 */
+menu,
+summary { /* 1 */
+  display: block;
+}
+
+/* Scripting
+   ========================================================================== */
+
+/**
+ * Add the correct display in IE 9-.
+ */
+
+canvas {
+  display: inline-block;
+}
+
+/**
+ * Add the correct display in IE.
+ */
+
+template {
+  display: none;
+}
+
+/* Hidden
+   ========================================================================== */
+
+/**
+ * Add the correct display in IE 10-.
+ */
+
+[hidden] {
+  display: none;
+}