diff --git a/src/css/app.scss b/src/css/app.scss
index f3ddef7..190579c 100644
--- a/src/css/app.scss
+++ b/src/css/app.scss
@@ -1,585 +1,8 @@
-/* ==========================================================================
-   Normalize.scss settings
-   ========================================================================== */
-/**
- * Includes legacy browser support IE6/7
- *
- * Set to false if you want to drop support for IE6 and IE7
- */
+// Utils
+@import './utils/normalize';
 
-$legacy_browser_support: false !default;
+// App
+@import './app/main';
 
-/* Base
-   ========================================================================== */
+// Components
 
-/**
- * 1. Set default font family to sans-serif.
- * 2. Prevent iOS and IE text size adjust after device orientation change,
- *    without disabling user zoom.
- * 3. Corrects text resizing oddly in IE 6/7 when body `font-size` is set using
- *  `em` units.
- */
-
-html {
-  font-family: sans-serif; /* 1 */
-  -ms-text-size-adjust: 100%; /* 2 */
-  -webkit-text-size-adjust: 100%; /* 2 */
-  @if $legacy_browser_support {
-    *font-size: 100%; /* 3 */
-  }
-}
-
-/**
- * Remove default margin.
- */
-
-body {
-  margin: 0;
-}
-
-/* HTML5 display definitions
-   ========================================================================== */
-
-/**
- * Correct `block` display not defined for any HTML5 element in IE 8/9.
- * Correct `block` display not defined for `details` or `summary` in IE 10/11
- * and Firefox.
- * Correct `block` display not defined for `main` in IE 11.
- */
-
-article,
-aside,
-details,
-figcaption,
-figure,
-footer,
-header,
-hgroup,
-main,
-menu,
-nav,
-section,
-summary {
-  display: block;
-}
-
-/**
- * 1. Correct `inline-block` display not defined in IE 6/7/8/9 and Firefox 3.
- * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
- */
-
-audio,
-canvas,
-progress,
-video {
-  display: inline-block; /* 1 */
-  vertical-align: baseline; /* 2 */
-  @if $legacy_browser_support {
-    *display: inline;
-    *zoom: 1;
-  }
-}
-
-/**
- * Prevents 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 8/9/10.
- * Hide the `template` element in IE 8/9/10/11, Safari, and Firefox < 22.
- */
-
-[hidden],
-template {
-  display: none;
-}
-
-/* Links
-   ========================================================================== */
-
-/**
- * Remove the gray background color from active links in IE 10.
- */
-
-a {
-  background-color: transparent;
-}
-
-/**
- * Improve readability of focused elements when they are also in an
- * active/hover state.
- */
-
-a {
-  &:active, &:hover {
-    outline: 0;
-  };
-}
-
-/* Text-level semantics
-   ========================================================================== */
-
-/**
- * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
- */
-
-abbr[title] {
-  border-bottom: 1px dotted;
-}
-
-/**
- * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
- */
-
-b,
-strong {
-  font-weight: bold;
-}
-
-@if $legacy_browser_support {
-  blockquote {
-    margin: 1em 40px;
-  }
-}
-
-/**
- * Address styling not present in Safari and Chrome.
- */
-
-dfn {
-  font-style: italic;
-}
-
-/**
- * Address variable `h1` font-size and margin within `section` and `article`
- * contexts in Firefox 4+, Safari, and Chrome.
- */
-
-h1 {
-  font-size: 2em;
-  margin: 0.67em 0;
-}
-
-@if $legacy_browser_support {
-  h2 {
-    font-size: 1.5em;
-    margin: 0.83em 0;
-  }
-
-  h3 {
-    font-size: 1.17em;
-    margin: 1em 0;
-  }
-
-  h4 {
-    font-size: 1em;
-    margin: 1.33em 0;
-  }
-
-  h5 {
-    font-size: 0.83em;
-    margin: 1.67em 0;
-  }
-
-  h6 {
-    font-size: 0.67em;
-    margin: 2.33em 0;
-  }
-}
-
-/**
- * Addresses styling not present in IE 8/9.
- */
-
-mark {
-  background: #ff0;
-  color: #000;
-}
-
-@if $legacy_browser_support {
-
-  /**
-   * Addresses margins set differently in IE 6/7.
-   */
-
-  p,
-  pre {
-    *margin: 1em 0;
-  }
-
-  /*
-   * Addresses CSS quotes not supported in IE 6/7.
-   */
-
-  q {
-    *quotes: none;
-  }
-
-  /*
-   * Addresses `quotes` property not supported in Safari 4.
-   */
-
-  q:before,
-  q:after {
-    content: '';
-    content: none;
-  }
-}
-
-/**
- * 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;
-}
-
-@if $legacy_browser_support {
-
-  /* ==========================================================================
-     Lists
-     ========================================================================== */
-
-  /*
-   * Addresses margins set differently in IE 6/7.
-   */
-
-  dl,
-  menu,
-  ol,
-  ul {
-    *margin: 1em 0;
-  }
-
-  dd {
-    *margin: 0 0 0 40px;
-  }
-
-  /*
-   * Addresses paddings set differently in IE 6/7.
-   */
-
-  menu,
-  ol,
-  ul {
-    *padding: 0 0 0 40px;
-  }
-
-  /*
-   * Corrects list images handled incorrectly in IE 7.
-   */
-
-  nav ul,
-  nav ol {
-    *list-style: none;
-    *list-style-image: none;
-  }
-
-}
-
-/* Embedded content
-   ========================================================================== */
-
-/**
- * 1. Remove border when inside `a` element in IE 8/9/10.
- * 2. Improves image quality when scaled in IE 7.
- */
-
-img {
-  border: 0;
-  @if $legacy_browser_support {
-    *-ms-interpolation-mode: bicubic; /* 2 */
-  }
-}
-
-/**
- * Correct overflow not hidden in IE 9/10/11.
- */
-
-svg:not(:root) {
-  overflow: hidden;
-}
-
-/* Grouping content
-   ========================================================================== */
-
-/**
- * Address margin not present in IE 8/9 and Safari.
- */
-
-figure {
-  margin: 1em 40px;
-}
-
-/**
- * Address differences between Firefox and other browsers.
- */
-
-hr {
-  box-sizing: content-box;
-  height: 0;
-}
-
-/**
- * Contain overflow in all browsers.
- */
-
-pre {
-  overflow: auto;
-}
-
-/**
- * Address odd `em`-unit font size rendering in all browsers.
- * Correct font family set oddly in IE 6, Safari 4/5, and Chrome.
- */
-
-code,
-kbd,
-pre,
-samp {
-  font-family: monospace, monospace;
-  @if $legacy_browser_support {
-    _font-family: 'courier new', 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, and Chrome.
- * 4. Improves appearance and consistency in all browsers.
- */
-
-button,
-input,
-optgroup,
-select,
-textarea {
-  color: inherit; /* 1 */
-  font: inherit; /* 2 */
-  margin: 0; /* 3 */
-  @if $legacy_browser_support {
-    vertical-align: baseline; /* 3 */
-    *vertical-align: middle; /* 3 */
-  }
-}
-
-/**
- * Address `overflow` set to `hidden` in IE 8/9/10/11.
- */
-
-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 8/9/10/11, 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.
- * 4. Removes inner spacing in IE 7 without affecting normal text inputs.
- *  Known issue: inner spacing remains in IE 6.
- */
-
-button,
-html input[type="button"], /* 1 */
-input[type="reset"],
-input[type="submit"] {
-  -webkit-appearance: button; /* 2 */
-  cursor: pointer; /* 3 */
-  @if $legacy_browser_support {
-    *overflow: visible;  /* 4 */
-  }
-}
-
-/**
- * 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;
-}
-
-/**
- * 1. Address box sizing set to `content-box` in IE 8/9/10.
- * 2. Remove excess padding in IE 8/9/10.
- *  Known issue: excess padding remains in IE 6.
- */
-
-input[type="checkbox"],
-input[type="radio"] {
-  box-sizing: border-box; /* 1 */
-  padding: 0; /* 2 */
-  @if $legacy_browser_support {
-    *height: 13px; /* 3 */
-    *width: 13px; /* 3 */
-  }
-}
-
-/**
- * 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 and Chrome.
- * 2. Address `box-sizing` set to `border-box` in Safari and Chrome.
- */
-
-input[type="search"] {
-  -webkit-appearance: textfield; /* 1 */
-  box-sizing: content-box; /* 2 */
-}
-
-/**
- * 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 8/9/10/11.
- * 2. Remove padding so people aren't caught out if they zero out fieldsets.
- * 3. Corrects text not wrapping in Firefox 3.
- * 4. Corrects alignment displayed oddly in IE 6/7.
- */
-
-legend {
-  border: 0; /* 1 */
-  padding: 0; /* 2 */
-  @if $legacy_browser_support {
-    white-space: normal; /* 3 */
-    *margin-left: -7px; /* 4 */
-  }
-}
-
-/**
- * Remove default vertical scrollbar in IE 8/9/10/11.
- */
-
-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;
-}
-
-
-.main {
-  width: 100%;
-  height: 100vh;
-
-}
diff --git a/src/css/app/_main.scss b/src/css/app/_main.scss
new file mode 100644
index 0000000..d6b9763
--- /dev/null
+++ b/src/css/app/_main.scss
@@ -0,0 +1,6 @@
+.main {
+  width: 100%;
+  height: calc(100vh - 3px);
+}
+
+
diff --git a/src/css/utils/_normalize.scss b/src/css/utils/_normalize.scss
new file mode 100644
index 0000000..9b77e0e
--- /dev/null
+++ b/src/css/utils/_normalize.scss
@@ -0,0 +1,461 @@
+/*! normalize.css v5.0.0 | MIT License | github.com/necolas/normalize.css */
+
+/**
+ * 1. Change the default font family in all browsers (opinionated).
+ * 2. Correct the line height in all browsers.
+ * 3. Prevent adjustments of font size after orientation changes in
+ *    IE on Windows Phone and in iOS.
+ */
+
+/* Document
+   ========================================================================== */
+
+html {
+  font-family: sans-serif; /* 1 */
+  line-height: 1.15; /* 2 */
+  -ms-text-size-adjust: 100%; /* 3 */
+  -webkit-text-size-adjust: 100%; /* 3 */
+}
+
+/* Sections
+   ========================================================================== */
+
+/**
+ * Remove the margin in all browsers (opinionated).
+ */
+
+body {
+  margin: 0;
+}
+
+/**
+ * Add the correct display in IE 9-.
+ */
+
+article,
+aside,
+footer,
+header,
+nav,
+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-.
+ * 1. Add the correct display in IE.
+ */
+
+figcaption,
+figure,
+main { /* 1 */
+  display: block;
+}
+
+/**
+ * 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
+   ========================================================================== */
+
+/**
+ * 1. Remove the gray background on active links in IE 10.
+ * 2. Remove gaps in links underline in iOS 8+ and Safari 8+.
+ */
+
+a {
+  background-color: transparent; /* 1 */
+  -webkit-text-decoration-skip: objects; /* 2 */
+}
+
+/**
+ * Remove the outline on focused links when they are also active or hovered
+ * in all browsers (opinionated).
+ */
+
+a:active,
+a:hover {
+  outline-width: 0;
+}
+
+/**
+ * 1. Remove the bottom border in Firefox 39-.
+ * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
+ */
+
+abbr[title] {
+  border-bottom: none; /* 1 */
+  text-decoration: underline; /* 2 */
+  text-decoration: underline dotted; /* 2 */
+}
+
+/**
+ * Prevent the duplicate application of `bolder` by the next rule in Safari 6.
+ */
+
+b,
+strong {
+  font-weight: inherit;
+}
+
+/**
+ * Add the correct font weight in Chrome, Edge, and Safari.
+ */
+
+b,
+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-.
+ */
+
+dfn {
+  font-style: italic;
+}
+
+/**
+ * Add the correct background and color in IE 9-.
+ */
+
+mark {
+  background-color: #ff0;
+  color: #000;
+}
+
+/**
+ * Add the correct font size in all browsers.
+ */
+
+small {
+  font-size: 80%;
+}
+
+/**
+ * Prevent `sub` and `sup` elements from affecting the line height in
+ * all browsers.
+ */
+
+sub,
+sup {
+  font-size: 75%;
+  line-height: 0;
+  position: relative;
+  vertical-align: baseline;
+}
+
+sub {
+  bottom: -0.25em;
+}
+
+sup {
+  top: -0.5em;
+}
+
+/* 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-.
+ */
+
+img {
+  border-style: none;
+}
+
+/**
+ * Hide the overflow in IE.
+ */
+
+svg:not(:root) {
+  overflow: hidden;
+}
+
+/* Forms
+   ========================================================================== */
+
+/**
+ * 1. Change the font styles in all browsers (opinionated).
+ * 2. Remove the margin in Firefox and Safari.
+ */
+
+button,
+input,
+optgroup,
+select,
+textarea {
+  font-family: sans-serif; /* 1 */
+  font-size: 100%; /* 1 */
+  line-height: 1.15; /* 1 */
+  margin: 0; /* 2 */
+}
+
+/**
+ * Show the overflow in IE.
+ * 1. Show the overflow in Edge.
+ */
+
+button,
+input { /* 1 */
+  overflow: visible;
+}
+
+/**
+ * Remove the inheritance of text transform in Edge, Firefox, and IE.
+ * 1. Remove the inheritance of text transform in Firefox.
+ */
+
+button,
+select { /* 1 */
+  text-transform: none;
+}
+
+/**
+ * 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`
+ *    controls in Android 4.
+ * 2. Correct the inability to style clickable types in iOS and Safari.
+ */
+
+button,
+html [type="button"], /* 1 */
+[type="reset"],
+[type="submit"] {
+  -webkit-appearance: button; /* 2 */
+}
+
+/**
+ * Remove the inner border and padding in Firefox.
+ */
+
+button::-moz-focus-inner,
+[type="button"]::-moz-focus-inner,
+[type="reset"]::-moz-focus-inner,
+[type="submit"]::-moz-focus-inner {
+  border-style: none;
+  padding: 0;
+}
+
+/**
+ * Restore the focus styles unset by the previous rule.
+ */
+
+button:-moz-focusring,
+[type="button"]:-moz-focusring,
+[type="reset"]:-moz-focusring,
+[type="submit"]:-moz-focusring {
+  outline: 1px dotted ButtonText;
+}
+
+/**
+ * Change the border, margin, and padding in all browsers (opinionated).
+ */
+
+fieldset {
+  border: 1px solid #c0c0c0;
+  margin: 0 2px;
+  padding: 0.35em 0.625em 0.75em;
+}
+
+/**
+ * 1. Correct the text wrapping in Edge and IE.
+ * 2. Correct the color inheritance from `fieldset` elements in IE.
+ * 3. Remove the padding so developers are not caught out when they zero out
+ *    `fieldset` elements in all browsers.
+ */
+
+legend {
+  box-sizing: border-box; /* 1 */
+  color: inherit; /* 2 */
+  display: table; /* 1 */
+  max-width: 100%; /* 1 */
+  padding: 0; /* 3 */
+  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.
+ */
+
+textarea {
+  overflow: auto;
+}
+
+/**
+ * 1. Add the correct box sizing in IE 10-.
+ * 2. Remove the padding in IE 10-.
+ */
+
+[type="checkbox"],
+[type="radio"] {
+  box-sizing: border-box; /* 1 */
+  padding: 0; /* 2 */
+}
+
+/**
+ * Correct the cursor style of increment and decrement buttons in Chrome.
+ */
+
+[type="number"]::-webkit-inner-spin-button,
+[type="number"]::-webkit-outer-spin-button {
+  height: auto;
+}
+
+/**
+ * 1. Correct the odd appearance in Chrome and Safari.
+ * 2. Correct the outline style in Safari.
+ */
+
+[type="search"] {
+  -webkit-appearance: textfield; /* 1 */
+  outline-offset: -2px; /* 2 */
+}
+
+/**
+ * Remove the inner padding and cancel buttons in Chrome and Safari on macOS.
+ */
+
+[type="search"]::-webkit-search-cancel-button,
+[type="search"]::-webkit-search-decoration {
+  -webkit-appearance: none;
+}
+
+/**
+ * 1. Correct the inability to style clickable types in iOS and Safari.
+ * 2. Change font properties to `inherit` in Safari.
+ */
+
+::-webkit-file-upload-button {
+  -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 {
+  display: block;
+}
+
+/*
+ * Add the correct display in all browsers.
+ */
+
+summary {
+  display: list-item;
+}
+
+/* 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;
+}