/*! ContentTools v1.3.1 by Anthony Blackshaw <ant@getme.co.uk> (https://github.com/anthonyjb) */
@charset "UTF-8";
/* Vendor */
html {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box; }

*, *:before, *:after {
  -webkit-box-sizing: inherit;
  -moz-box-sizing: inherit;
  box-sizing: inherit; }

/* Reset */
/*! normalize.css v3.0.2 | 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 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 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 8/9/10.
 * Hide the `template` element in IE 8/9/11, 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 when focused and also mouse hovered in all browsers.
 */
a:active,
a:hover {
  outline: 0; }

/* Text-level semantics
   ========================================================================== */
/**
 * Address styling not present in IE 8/9/10/11, 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; }

/**
 * 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; }

/**
 * 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 8/9/10.
 */
img {
  border: 0; }

/**
 * 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 {
  -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, and Chrome.
 */
button,
input,
optgroup,
select,
textarea {
  color: inherit;
  /* 1 */
  font: inherit;
  /* 2 */
  margin: 0;
  /* 3 */ }

/**
 * Address `overflow` set to `hidden` in IE 8/9/10/11.
 */
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.
 */
button,
html input[type="button"],
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 and Chrome.
 * 2. Address `box-sizing` set to `border-box` in Safari 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 8/9/10/11.
 * 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 8/9/10/11.
 */
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; }

/* Settings */
/* Grid */
/* Breakpoints */
/* Body */
body {
  color: #494949;
  font-family: helvetica, 'Open Sans',sans-serif;
  -webkit-font-feature-settings: "kern", "liga", "frac" 0, "pnum";
  -moz-font-feature-settings: "kern", "liga", "frac" 0, "pnum";
  -ms-font-feature-settings: "kern", "liga", "frac" 0, "pnum";
  font-feature-settings: "kern", "liga", "frac" 0, "pnum";
  -webkit-font-smoothing: antialiased; }

/* Technical article */
.article {
  max-width: 920px;
  margin-left: auto;
  margin-right: auto;
  padding: 0 10px 2em; }
  .article::after {
    clear: both;
    content: "";
    display: table; }
  .article__content {
    width: 100%; }
    @media screen and (min-width: 720px) {
      .article__content {
        float: left;
        display: block;
        margin-right: 2.35765%;
        width: 65.88078%; }
        .article__content:last-child {
          margin-right: 0; } }
    .article__content h1 {
      color: #3c3c3c;
      font-family: georgia, serif;
      font-size: 60px;
      margin-bottom: 0; }
    .article__content h2 {
      font-size: 20px;
      margin-top: 1.5em;
      line-height: 125%; }
    .article__content li,
    .article__content p {
      font-size: 14px;
      line-height: 145%; }
    .article__content blockquote {
      color: #7c7c7c;
      font-family: georgia, serif;
      font-size: 20px;
      font-style: italic;
      line-height: 135%;
      margin: 1.5em 0;
      padding-left: 40px;
      position: relative; }
      .article__content blockquote:before {
        content: '“';
        font-size: 60px;
        left: 0;
        position: absolute;
        top: 5px; }
    .article__content table {
      -webkit-font-feature-settings: "kern", "liga", "tnum";
      -moz-font-feature-settings: "kern", "liga", "tnum";
      -ms-font-feature-settings: "kern", "liga", "tnum";
      font-feature-settings: "kern", "liga", "tnum";
      border-collapse: collapse;
      font-size: 14px;
      margin-top: 20px;
      table-layout: fixed;
      width: 100%; }
    .article__content th {
      border-bottom: 1px solid #494949;
      font-weight: bold;
      padding: 10px 0;
      text-align: left; }
    .article__content td {
      border-bottom: 1px solid #c9c9c9;
      padding: 10px 0; }
    .article__content tr,
    .article__content td,
    .article__content th {
      vertical-align: middle; }
  .article__by-line {
    font-family: georgia, serif;
    font-style: italic; }
  .article__caption {
    color: #7c7c7c;
    font-family: georgia, serif;
    font-size: 12px;
    font-style: italic;
    text-align: center; }
  .article__related {
    width: 100%;
    margin-top: 2em; }
    @media screen and (min-width: 720px) {
      .article__related {
        margin-left: 8.5298%;
        float: left;
        display: block;
        margin-right: 2.35765%;
        width: 23.23176%; }
        .article__related:last-child {
          margin-right: 0; } }

/* Code examples */
.example {
  background: #f6f6f6;
  border-radius: 4px;
  color: #6f6f6f;
  padding: 0.5em; }
  .example--bad:before {
    color: #c0392b;
    content: 'BAD  ';
    font-weight: bold; }
  .example--good:before {
    color: #27ae60;
    content: 'GOOD ';
    font-weight: bold; }

/* Author */
.author {
  background: #1abc9c;
  color: white;
  padding: 1em; }
  .author::after {
    clear: both;
    content: "";
    display: table; }
  .author .author__about {
    font-size: 16px;
    margin-top: 0;
    margin-bottom: 0.5em; }
  .author .author__bio {
    font-size: 13px;
    font-style: italic;
    line-height: 135%;
    margin: 0.5em 0 0; }
  .author .ce-element--focused,
  .author .ce-element--over {
    background-color: rgba(255, 255, 255, 0.2);
    outline-color: rgba(255, 255, 255, 0.2) !important;
    z-index: initial; }

/* Learn more */
.learn-more {
  margin-top: 1em; }
  .learn-more h3 {
    font-size: 16px;
    margin: 0.5em 0; }
  .learn-more p {
    font-size: 13px;
    line-height: 135%;
    margin: 0.5em 0; }

/* Alignment */
img,
iframe,
video,
.ce-element--type-image,
.ce-element--type-video {
  clear: both;
  display: block;
  margin-left: auto;
  margin-right: auto;
  max-width: 100%; }
  img.align-left,
  iframe.align-left,
  video.align-left,
  .ce-element--type-image.align-left,
  .ce-element--type-video.align-left {
    clear: initial;
    float: left;
    margin-right: 0.5em; }
  img.align-right,
  iframe.align-right,
  video.align-right,
  .ce-element--type-image.align-right,
  .ce-element--type-video.align-right {
    clear: initial;
    float: right;
    margin-left: 0.5em; }

.text-center {
  text-align: center; }

.text-left {
  text-align: left; }

.text-right {
  text-align: right; }