initialize-css/dist/initialize.less

Initialize.css is a complete and customizable collection of CSS best practices based on Normalize.css and HTML5 Boilerplate. Available in CSS and configurable SASS (SCSS) and LESS format.

/*!
 * Initialize.css (v1.4.0) is a complete and customizable collection of CSS best practices based on Normalize.css and HTML5 Boilerplate.
 * http://jeroenoomsnl.github.io/initialize-css
 *
 * HTML5 Boilerplate: https://github.com/h5bp/html5-boilerplate
 * Normalize.css: http://github.com/necolas/normalize.css
 */


// ==========================================================================
// Config
// ==========================================================================

//
// Predefined values
//
@initialize-box-sizing: border-box;
@initialize-font-family: sans-serif;
@initialize-font-size: 1em;
@initialize-line-height: 1.4;

//
// Options
//
@initialize-dinosaur-mode: false; // toggle support for IE8, IE9 & IE10
@initialize-print-styles: false; // toggle HTML5 Boilerplate print styles
@initialize-html5-boilerplate-overwrites: false; // toggle HTML5 Boilerplate overwrites

//
// Optional values
//
@initialize-color: null;
@initialize-heading-color: null;
@initialize-heading-margins: null;
@initialize-heading-font-family: null;
@initialize-block-margins: null;



// ==========================================================================
// Helpers
// ==========================================================================

//
// Mixin for optional properties
//
.optional-prop(@property, @value) when not(@value=null) {
  @{property}: @value;
}



/* ==========================================================================
   General
   ========================================================================== */

/**
 * 1. Set default font family to @initialize-font-family (default: sans-serif)
 * 2. Prevent iOS and IE text size adjust after device orientation change,
 *    without disabling user zoom
 * 3. Configurable defaults
 */
html {
  .optional-prop(color, @initialize-color);
  .optional-prop(box-sizing, @initialize-box-sizing);

  font-family: @initialize-font-family; /* 1 */
  line-height: @initialize-line-height; /* 3 */
  font-size: @initialize-font-size; /* 3 */
  -ms-text-size-adjust: 100%; /* 2 */
  -webkit-text-size-adjust: 100%; /* 2 */
}

/*
 * Remove default margin
 */
body {
  margin: 0;
}

/*
 * Inheriting box-sizing
 * https://css-tricks.com/inheriting-box-sizing-probably-slightly-better-best-practice/
 */
*, *:before, *:after {
  box-sizing: inherit;
}



/* ==========================================================================
   HTML5 display defenitions
   ========================================================================== */

/**
 * Add the correct display in IE 9-.
 * 1. Add the correct display in Edge, IE, and Firefox.
 * 2. Add the correct display in IE.
 */

.html5-display-old(@initialize-dinosaur-mode) when (@initialize-dinosaur-mode = true) {
  article,
  aside,
  details, /* 1 */
  figcaption,
  figure,
  footer,
  header,
  hgroup,
  main, /* 2 */
  menu,
  nav,
  section {
    display: block;
  }
}
.html5-display-old(@initialize-dinosaur-mode);

.html5-display-new(@initialize-dinosaur-mode) when (@initialize-dinosaur-mode = true) {
  details, /* 1 */
  main /* 2 */ {
    display: block;
  }
}
.html5-display-new(@initialize-dinosaur-mode);

/*
 * Add the correct display in all browsers.
 */

 summary {
  display: list-item;
}

/*
 * Correct `inline-block` display not defined in IE 8/9.
 */

audio,
canvas,
video {
  & when (@initialize-dinosaur-mode = true)  {
    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 when (@initialize-dinosaur-mode = true) {
  background-color: transparent;
}

/*
 * Improve readability of focused elements when they are also in an
 * active/hover state.
 */

a:active,
a:hover {
  outline: 0;
}



/* ==========================================================================
   Text-level semantics
   ========================================================================== */

/**
 * 1. Remove the bottom border in Chrome 57- and 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;
}

/**
 * Add the correct font style in Android 4.3-.
 */

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;
}

/*
* Address styling not present in IE 8/9.
*/

mark when (@initialize-dinosaur-mode = true) {
    background: #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;
}

sup {
  top: -0.5em;
}

sub {
  bottom: -0.25em;
}



/* ==========================================================================
   Embedded content
   ========================================================================== */

/**
  * Remove the border on images inside links in IE 10-.
  */

img when (@initialize-dinosaur-mode = true) {
  border: 0;
}

/**
 * Hide the overflow in IE.
 */

svg:not(:root) {
  overflow: hidden;
}



/* ==========================================================================
   Grouping content
   ========================================================================== */

/*
 * Address margin not present in IE 8/9 and Safari.
 */

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
   ========================================================================== */

/**
 * 1. Change the font styles in all browsers (opinionated).
 * 2. Remove the margin in Firefox and Safari.
 */

 button,
 input,
 select,
 textarea {
     font-family: @initialize-font-family; /* 1 */
     font-size: 100%; /* 1 */
     line-height: @initialize-line-height; /* 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;
 }

 .fieldset(@initialize-html5-boilerplate-overwrites) when (@initialize-html5-boilerplate-overwrites = true) {
  /**
   * Correct the padding in Firefox.
   */

  fieldset {
    padding: 0.35em 0.625em 0.75em;
  }
}
.fieldset(@initialize-html5-boilerplate-overwrites);

/**
* 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;
}

.checkbox-radio(@initialize-dinosaur-mode) when (@initialize-dinosaur-mode = true) {
  /**
   * 1. Add the correct box sizing in IE 10-.
   * 2. Remove the padding in IE 10-.
   */

  input[type="checkbox"],
  input[type="radio"] {
    box-sizing: border-box; /* 1 */
    padding: 0; /* 2 */
  }
}
.checkbox-radio(@initialize-dinosaur-mode);

/**
* 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 */
}



.html5-boilerplate-styles(@initialize-html5-boilerplate-overwrites) when (@initialize-html5-boilerplate-overwrites = true) {
  /* ==========================================================================
    HTML5 Boilerplate optimizations
    ========================================================================== */

  /*
  * Remove text-shadow in selection highlight:
  * https://twitter.com/miketaylr/status/12228805301
  *
  * These selection rule sets have to be separate.
  * Customize the background color to match your design.
  */

  ::selection {
      background: #b3d4fc;
      text-shadow: none;
  }

  /*
  * A better looking default horizontal rule
  */

  hr {
      display: block;
      height: 1px;
      border: 0;
      border-top: 1px solid #ccc;
      margin: 1em 0;
      padding: 0;
  }

  /*
  * Remove the gap between audio, canvas, iframes,
  * images, videos and the bottom of their containers:
  * https://github.com/h5bp/html5-boilerplate/issues/440
  */

  audio,
  canvas,
  iframe,
  img,
  svg,
  video {
      vertical-align: middle;
  }

  /*
  * Remove default fieldset styles.
  */

  fieldset {
      border: 0;
      margin: 0;
      padding: 0;
  }

  /*
  * Allow only vertical resizing of textareas.
  */

  textarea {
      resize: vertical;
  }
}
.html5-boilerplate-styles(@initialize-html5-boilerplate-overwrites);


/* ==========================================================================
   Optional configurations
   ========================================================================== */

/*
 * Headings
 */

h1, h2, h3, h4, h5, h6 {
  .optional-prop(color, @initialize-heading-color);
  .optional-prop(margin, @initialize-heading-margins);
  .optional-prop(font-family, @initialize-heading-font-family);
}

/*
 * Block elements
 */

p, table, ul, ol, fieldset, blockquote, dl {
  .optional-prop(margin, @initialize-block-margins);
}



.print-styles(@initialize-print-styles) when (@initialize-print-styles = true) {
/* ==========================================================================
   Print styles
   ========================================================================== */
  @media print {
    *,
    *:before,
    *:after,
    *:first-letter,
    *:first-line {
        background: transparent !important;
        color: #000 !important; // Black prints faster: http://www.sanbeiji.com/archives/953
        box-shadow: none !important;
        text-shadow: none !important;
    }

    a,
    a:visited {
        text-decoration: underline;
    }

    a[href]:after {
        content: " (" attr(href) ")";
    }

    abbr[title]:after {
        content: " (" attr(title) ")";
    }

    // Don't show links that are fragment identifiers,
    // or use the `javascript:` pseudo protocol
    a[href^="#"]:after,
    a[href^="javascript:"]:after {
        content: "";
    }

    pre,
    blockquote {
        border: 1px solid #999;
        page-break-inside: avoid;
    }

    // Printing Tables:
    // http://css-discuss.incutio.com/wiki/Printing_Tables
    thead {
        display: table-header-group;
    }

    tr,
    img {
        page-break-inside: avoid;
    }

    img {
        max-width: 100% !important;
    }

    p,
    h2,
    h3 {
        orphans: 3;
        widows: 3;
    }

    h2,
    h3 {
        page-break-after: avoid;
    }
  }
}
.print-styles(@initialize-print-styles);