_normalize.less

// =============================================================================
// Normalize.less based on Nicolas Gallagher and Jonathan Neal's
// normalize.css v3.0.1 | MIT License | github.com/necolas/normalize.css
// =============================================================================

//
// Variables
// ====================================================================

// Base font-family
@base-font-family: sans-serif;

// The base font size
@base-font-size: 16px;

// The base line height determines the basic unit of vertical rhythm.
@base-line-height: 24px;

// Heading sizes
@h1-size: 36px;


//
// Mixins
// ====================================================================

//
// Passing in a single value will create font-sizing in 
// pixels, rems as well as a proper line-height.
// 
//  `.font-size(24px, false);`
// 

.font-size(@font-size, @line-height: true) {
  @px-value: (@font-size);
  @rem-value: (@font-size / @base-font-size) * 1rem;
  @line-height-value: ceil(@font-size / @base-line-height) * (@base-line-height / @font-size);

  font-size: ~"@{px-value}";
  font-size: @rem-value;

  .line-height(@boolean) when (@boolean = true) {
    line-height: unit(@line-height-value);
  }

  .line-height(@line-height);
}


//
// 1. Set default font family to sans-serif.
// 2. Prevent iOS and IE text size adjust after device orientation change, 
//    without disabling user zoom.
//

html {
  font-size: 100%; // 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,
menu,
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 8/9/10.
// 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.
  //
  
  &:focus { outline: thin dotted; }
  
  &: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; }


//
// 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(@h1-size);
  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 {
  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(@base-font-size);
}



//
// 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; // 1 //
  margin: 0; // 1 //
}


//
// 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"], // 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.
  //
  
  &[type="checkbox"], 
  &[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`.
  //
  
  &[type="number"] {
    &::-webkit-inner-spin-button, 
    &::-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.
  //
  
  &[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).
    //
  
    &::-webkit-search-cancel-button, 
    &::-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; }