custom normalize

_normalize.scss

/*! normalize.css v1.0.0 | MIT License | git.io/normalize */

/*
 * usage:
 * @import "normalize";
 *
 * // this will print out ALL selectors
 * @include normalize();
 *
 * // this will print out minimal set (*) -- you can see the list of "excluded" tags below
 * @include normalize( $include : none );
 *
 * // this will print out minimal set + article, but without form ( and anything related to form, like input ) and h1-h6 tags
 * @include normalize( $include : article, $exclude : form "h*" );
 *
 * // this will print out ALL selectors, but will not use IE 6/7 "hacks"
 * @include normalize( $hacks : false );
 */

/*
 * (*) "excluded" in minimal:
 * - abbr
 * - article
 * - aside
 * - audio
 * - blockquote
 * - canvas
 * - code
 * - details
 * - dfn
 * - fieldset
 * - figcaption
 * - figure
 * - footer
 * - header
 * - hgroup
 * - kdb
 * - legend
 * - mark
 * - menu
 * - nav
 * - q
 * - samp
 * - section
 * - small
 * - sub
 * - summary
 * - sup
 * - svg
 * - table
 * - video
 */


@function in-list( $value, $list ) {
  $found : false;
  @each $item in $list {
    @if $value == $item {
      $found : true;
    }
  }
  @return $found;
}

@mixin if-in-list(
  $elements,
  $list,
  $extend,
  $is-in-list : true
) {
  @each $element in $elements {
    $found : false;

    @if $is-in-list  {
      @if in-list( $element, $list ) {
        $found : true;
      }
    } @else {
      @if not in-list( $element, $list ) {
        $found : true;
      }
    }

    @if $found {
      #{$element} {
        @extend %#{$extend};
      }
    }
  }
}

@mixin normalize(
  $include : abbr article aside audio blockquote canvas code details dfn fieldset figcaption figure footer header hgroup kdb legend mark menu nav q samp section small sub summary sup svg table video,
  $exclude : none,
  $hacks   : false
) {

  ///// base css placeholders /////

  // display: block;
  %normalize-display-block {
    display: block;
  }

  // display: inline-block;
  %normalize-display-inline-block {
    display: inline-block;
    @if $hacks {
      *display: inline;
      *zoom: 1;
    }
  }

  // display: none;
  %normalize-display-none {
    display: none;
  }

  // border: 0;
  %normalize-border-0 {
    border: 0;
  }

  // font-family: sans-serif;
  %normalize-font-sans-serif {
    font-family: sans-serif;
  }

  // font-family: monospace;
  %normalize-font-mono {
    font-family: monospace, serif;
    _font-family: 'courier new', monospace;
    font-size: 1em;
  }

  // font-weight: bold;
  %normalize-font-weight-bold {
    font-weight: 700;
  }

  // outline:0;
  %normalize-outline-0 {
    outline: 0;
  }

  // line-height: normal;
  %normalize-line-height-normal {
    line-height: normal;
  }

  // margin: 0;
  %normalize-margin-0 {
    margin: 0;
  }

  // margin: 1em 0;
  %normalize-margin-1em-0 {
    margin: 1em 0;
  }

  // padding: 0;
  %normalize-padding-0 {
    padding: 0;
  }

  // padding: 0 0 0 40px;
  %normalize-padding-0-0-0-40px {
    padding: 0 0 0 40px;
  }

  // list-style: none;
  %no-list-style {
    list-style: none;
    list-style-image: none;
  }

  // cursor: default;
  %normalize-cursor-default {
    cursor: default;
  }

  ///// element placeholders /////

  // sup, sub
  %normalized-sup_sub {
    font-size: 75%;
    line-height: 0;
    position: relative;
    vertical-align: baseline;
  }

  // pre
  %normalized-pre {
    white-space: pre;
    white-space: pre-wrap;
    word-wrap: break-word;
  }

  // input, select, button, textarea
  /*
   * 1. Corrects font size not being inherited in all browsers.
   * 2. Addresses margins set differently in IE 6/7, Firefox 3+, Safari 5,
   *    and Chrome.
   * 3. Improves appearance and consistency in all browsers.
   */
  %normalized-inputs {
    font-size: 100%; /* 1 */
    @extend %normalize-margin-0; /* 2 */
    vertical-align: baseline; /* 3 */

    @if $hacks {
      *vertical-align: middle; /* 3 */
    }
  }

  // button, input[type="submit"], input[type="button"] ...
  /*
   * 2. Corrects inability to style clickable `input` types in iOS.
   * 3. Improves 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.
   */
  %normalized-button {
    -webkit-appearance: button; /* 2 */
    cursor: pointer; /* 3 */

    @if $hacks {
      *overflow: visible;  /* 4 */
    }
  }

  // input[type="checkbox"], input[type="radio"]
  %normalized-checkable {
    box-sizing: border-box; /* 1 */
    @extend %normalize-padding-0; /* 2 */

    @if $hacks {
      *height: 13px; /* 3 */
      *width: 13px; /* 3 */
    }
  }


  // ::-moz-focus-inner
  /*
   * Removes inner padding and border in Firefox 3+.
   */
  %normalized-moz-focus-inner {
    @if not in-list( "::-moz-focus-inner", $exclude ) {
      @extend %normalize-border-0;
      @extend %normalize-padding-0;
    }
  }

  /* ==========================================================================
     HTML5 display definitions
     ========================================================================== */

  /*
   * Corrects `block` display not defined in IE 6/7/8/9 and Firefox 3.
   */
  @include if-in-list(
    $elements : article aside details figcaption figure footer header hgroup nav section summary,
    $list     : $include,
    $extend   : normalize-display-block
  );

  /*
   * Corrects `inline-block` display not defined in IE 6/7/8/9 and Firefox 3.
   */
  @include if-in-list(
    $elements : audio canvas video,
    $list     : $include,
    $extend   : normalize-display-inline-block
  );

  /*
   * Prevents modern browsers from displaying `audio` without controls.
   * Remove excess height in iOS 5 devices.
   */
  @if in-list( audio, $include) and not in-list( 'audio:not[controls]', $exclude ) {
    audio:not([controls]) {
      @extend %normalize-display-none;
      height: 0;
    }
  }

  /*
   * Addresses styling for `hidden` attribute not present in IE 7/8/9, Firefox 3,
   * and Safari 4.
   * Known issue: no IE 6 support.
   */
  @if not in-list( '[hidden]', $exclude ) {
    [hidden] {
      @extend %normalize-display-none;
    }
  }

  /* ==========================================================================
     Base
     ========================================================================== */

  /*
   * 1. Corrects text resizing oddly in IE 6/7 when body `font-size` is set using
   *    `em` units.
   * 2. Prevents iOS text size adjust after orientation change, without disabling
   *    user zoom.
   */

  @if not in-list( html, $exclude ) {
    html {
      @if $hacks {
        font-size: 100%; /* 1 */
      }
      -webkit-text-size-adjust: 100%; /* 2 */
      -ms-text-size-adjust: 100%; /* 2 */
    }
  }

  /*
   * Addresses `font-family` inconsistency between `textarea` and other form
   * elements.
   */
  @include if-in-list(
    $elements   : html button input select textarea,
    $list       : $exclude,
    $extend     : normalize-font-sans-serif,
    $is-in-list : false
  );

  /*
   * Addresses margins handled incorrectly in IE 6/7.
   */

  @if not in-list( body, $exclude ) {
    body {
      margin: 0;
    }
  }

  /* ==========================================================================
     Links
     ========================================================================== */
  @if not in-list( a, $exclude ) {
    a {
      /*
       * Addresses `outline` inconsistency between Chrome and other browsers.
       */
      @if not in-list( 'a:focus', $exclude ){
        &:focus {
            outline: thin dotted;
        }
      }
      /*
       * Improves readability when focused and also mouse hovered in all browsers.
       */
      @include if-in-list(
        $elements   : 'a:active' 'a:hover',
        $list       : $exclude,
        $extend     : normalize-outline-0,
        $is-in-list : false
      );
    }
  }

  /* ==========================================================================
     Typography
     ========================================================================== */

  /*
   * Addresses font sizes and margins set differently in IE 6/7.
   * Addresses font sizes within `section` and `article` in Firefox 4+, Safari 5,
   * and Chrome.
   */
  @if not in-list( 'h*', $exclude ) {
    // h1
    @if not in-list( h1, $exclude ) {
      h1 {
          font-size: 2em;
          margin: 0.67em 0;
      }
    }

    // h2
    @if not in-list( h2, $exclude ) {
      h2 {
          font-size: 1.5em;
          margin: 0.83em 0;
      }
    }

    // h3
    @if not in-list( h3, $exclude ) {
      h3 {
          font-size: 1.17em;
          margin: 1em 0;
      }
    }

    // h4
    @if not in-list( h4, $exclude ) {
      h4 {
          font-size: 1em;
          margin: 1.33em 0;
      }
    }

    // h5
    @if not in-list( h5, $exclude ) {
      h5 {
          font-size: 0.83em;
          margin: 1.67em 0;
      }
    }

    // h6
    @if not in-list( h6, $exclude ) {
      h6 {
          font-size: 0.75em;
          margin: 2.33em 0;
      }
    }
  }

  /*
   * Addresses styling not present in IE 7/8/9, Safari 5, and Chrome.
   */

  @if in-list( abbr, $include ) {
    abbr[title] {
      border-bottom: 1px dotted;
    }
  }

  /*
   * Addresses style set to `bolder` in Firefox 3+, Safari 4/5, and Chrome.
   */
  @include if-in-list(
    $elements   : b strong,
    $list       : $exclude,
    $extend     : normalize-font-weight-bold,
    $is-in-list : false
  );

  @if in-list( blockquote, $include ) {
    blockquote {
      margin: 1em 40px;
    }
  }

  /*
   * Addresses styling not present in Safari 5 and Chrome.
   */

  @if in-list( dfn, $include ) {
    dfn {
      font-style: italic;
    }
  }

  /*
   * Addresses styling not present in IE 6/7/8/9.
   */
  @if in-list( mark, $include ) {
    mark {
      background: #ff0;
      color: #000;
    }
  }

  /*
   * Addresses margins set differently in IE 6/7.
   */
  @include if-in-list(
    $elements   : p pre,
    $list       : $exclude,
    $extend     : normalize-margin-1em-0,
    $is-in-list : false
  );

  /*
   * Corrects font family set oddly in IE 6, Safari 4/5, and Chrome.
   */
  @include if-in-list(
    $elements : code kdb samp,
    $list     : $include,
    $extend   : normalize-font-mono
  );

  /*
   * Improves readability of pre-formatted text in all browsers.
   */
  @if not in-list( pre, $exclude ) {
    pre {
      @extend %normalize-font-mono;
      @extend %normalized-pre;
    }
  }

  @if in-list( q, $include ) {
    /*
     * 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;
    }
  }


  @if in-list( small, $include ) {
    small {
      font-size: 75%;
    }
  }

  /*
   * Prevents `sub` and `sup` affecting `line-height` in all browsers.
   */
  @if in-list( sup, $include ) {
    sup {
      @extend %normalized-sup_sub;
      top: -0.5em;
    }
  }

  @if in-list( sub, $include ) {
    sub {
      @extend %normalized-sup_sub;
      bottom: -0.25em;
    }
  }

  /* ==========================================================================
     Lists
     ========================================================================== */

  @if not in-list( lists, $exclude ) {
    /*
     * Addresses margins set differently in IE 6/7.
     */
    @include if-in-list(
      $elements   : dl ol ul,
      $list       : $exclude,
      $extend     : normalize-margin-1em-0,
      $is-in-list : false
    );

    @if in-list( menu, $include ) {
      menu {
        @extend %normalize-margin-1em-0;
        @extend %normalize-padding-0-0-0-40px;
      }
    }

    @if not in-list( dl, $exclude ) and not in-list( dd, $exclude ) {
      dd {
        margin: 0 0 0 40px;
      }
    }

    /*
     * Addresses paddings set differently in IE 6/7.
     */
    @include if-in-list(
      $elements   : ol ul,
      $list       : $exclude,
      $extend     : normalize-padding-0-0-0-40px,
      $is-in-list : false
    );

    /*
     * Corrects list images handled incorrectly in IE 7.
     */
    @if in-list( nav, $include ) {
      nav {
        @include if-in-list(
          $elements   : ol ul,
          $list       : $exclude,
          $extend     : no-list-style,
          $is-in-list : false
        );
      }
    }
  }

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

  /*
   * 1. Removes border when inside `a` element in IE 6/7/8/9 and Firefox 3.
   * 2. Improves image quality when scaled in IE 7.
   */
  @if not in-list( img, $exclude ) {
    img {
      @extend %normalize-border-0; /* 1 */
      @if $hacks {
        -ms-interpolation-mode: bicubic; /* 2 */
      }
    }
  }

  /*
   * Corrects overflow displayed oddly in IE 9.
   */
  @if in-list( svg, $include) {
    svg:not(:root) {
        overflow: hidden;
    }
  }

  /* ==========================================================================
     Figures
     ========================================================================== */
  /*
   * Addresses margin not present in IE 6/7/8/9, Safari 5, and Opera 11.
   */
  @if in-list( figure, $include ) {
    figure {
      @extend %normalize-margin-0;
    }
  }

  /* ==========================================================================
     Forms
     ========================================================================== */
  @if not in-list( form, $exclude ) {
    /*
     * Corrects margin displayed oddly in IE 6/7.
     */
    form {
      @extend %normalize-margin-0;
    }

    /*
     * Define consistent border, margin, and padding.
     */
    @if in-list( fieldset, $include ) {
      fieldset {
          border: 1px solid #c0c0c0;
          margin: 0 2px;
          padding: 0.35em 0.625em 0.75em;
      }

      /*
       * 1. Corrects color not being inherited in IE 6/7/8/9.
       * 2. Corrects text not wrapping in Firefox 3.
       * 3. Corrects alignment displayed oddly in IE 6/7.
       */
       @if in-list( legend, $include ) {
        legend {
          @extend %normalize-border-0; /* 1 */
          @extend %normalize-padding-0;
          white-space: normal; /* 2 */
          @if $hacks {
            *margin-left: -7px; /* 3 */
          }
        }
      }
    }

    @include if-in-list(
      $elements   : button input select textarea,
      $list       : $exclude,
      $extend     : normalized-inputs,
      $is-in-list : false
    );


    /*
     * Addresses Firefox 3+ setting `line-height` on `input` using `!important` in
     * the UA stylesheet.
     */
     @include if-in-list(
      $elements   : button input,
      $list       : $exclude,
      $extend     : normalize-line-height-normal,
      $is-in-list : false
    );

    /*
     * Re-set default cursor for disabled elements.
     */
    @if not in-list( button, $exclude ) {
      button {
        @extend %normalized-button;

        &::-moz-focus-inner {
          @extend %normalized-moz-focus-inner;
        }

        @if not in-list( "[disabled]", $exclude ) and not in-list( "button[disabled]", $exclude ) {
          &[disabled] {
            @extend %normalize-cursor-default;
          }
        }
      }
    }

    @if not in-list( "input", $exclude ) {
      input {
        @extend %normalize-line-height-normal;

        &::-moz-focus-inner {
          @extend %normalized-moz-focus-inner;
        }

        @if not in-list( "[disabled]", $exclude ) and not in-list( "input[disabled]", $exclude ) {
          &[disabled] {
            @extend %normalize-cursor-default;
          }
        }
      }

      @if not in-list( "[type]", $exclude ) and not in-list( "input[type]", $exclude ) {
        /*
         * Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
         * and `video` controls.
         */
        @if not in-list( 'input[type="button"]', $exclude ) {
          html input[type="button"] {
            @extend %normalized-button;
          }
        }

        @include if-in-list(
          $elements   : 'input[type="reset"]' 'input[type="submit"]',
          $list       : $exclude,
          $extend     : normalized-button,
          $is-in-list : false
        );

        /*
         * 1. Addresses box sizing set to content-box in IE 8/9.
         * 2. Removes excess padding in IE 8/9.
         * 3. Removes excess padding in IE 7.
         *    Known issue: excess padding remains in IE 6.
         */
        @if not in-list( ":checkable", $exclude ) {
          @include if-in-list(
            $elements   : 'input[type="checkbox"]' 'input[type="radio"]',
            $list       : $exclude,
            $extend     : normalized-checkable,
            $is-in-list : false
          );
        }

        /*
         * 1. Addresses `appearance` set to `searchfield` in Safari 5 and Chrome.
         * 2. Addresses `box-sizing` set to `border-box` in Safari 5 and Chrome
         *    (include `-moz` to future-proof).
         */
        @if not in-list( 'input[type="search"]', $exclude ) {
          input[type="search"] {
            -webkit-appearance: textfield; /* 1 */
            -moz-box-sizing: content-box;
            -webkit-box-sizing: content-box; /* 2 */
            box-sizing: content-box;

            /*
             * Removes inner padding and search cancel button in Safari 5 and Chrome
             * on OS X.
             */
            &::-webkit-search-cancel-button,
            &::-webkit-search-decoration {
              -webkit-appearance: none;
            }
          }
        }
      }
    }



    /*
     * 1. Removes default vertical scrollbar in IE 6/7/8/9.
     * 2. Improves readability and alignment in all browsers.
     */
    @if not in-list( textarea, $exclude ) {
      textarea {
        overflow: auto; /* 1 */
        vertical-align: top; /* 2 */
      }
    }
  }

  /* ==========================================================================
     Tables
     ========================================================================== */

  /*
   * Remove most spacing between table cells.
   */
  @if in-list( table, $include ) {
    table {
      border-collapse: collapse;
      border-spacing: 0;
    }
  }
}

sample.scss

@import "normalize";

@include normalize();