ionic-framework/scss/_scaffolding.scss

/**
 * Scaffolding
 * --------------------------------------------------
 */

*,
*:before,
*:after {
  @include box-sizing(border-box);
}

a {
  -webkit-user-drag: none;
  -webkit-tap-highlight-color: transparent;
}
img {
  -webkit-user-drag: none;
}

body, .ionic-body {
  @include font-smoothing(antialiased);
  //-webkit-perspective: 1000;
  -webkit-backface-visibility: hidden;
  @include text-size-adjust(none);
  @include tap-highlight-transparent();
  @include user-select(none);

  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  overflow: hidden;

  margin: 0;
  padding: 0;
  
  color: $base-color;
  word-wrap: break-word;
  font-size: $font-size-base;
  font-family: $font-family-base;
  line-height: $line-height-computed;
  text-rendering: optimizeLegibility;
  -webkit-user-drag: none;
}

.content:before,
.content:after {
  // Uncollapse content margin if child elements DO have an margin
  display: block;
  overflow: hidden;
  height: 0;
  content: "\00a0"; // No-break space character
}

.content {
  position: absolute;
  width: 100%;
  height: 100%;
}

.scroll-content {
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;

  position: absolute;
  overflow: hidden;
  //-webkit-perspective: 1000;
  -webkit-backface-visibility: hidden;

  // Hide the top border if any
  margin-top: -1px;

  width: auto;
  height: auto;
}

.scroll-view {
  overflow: hidden;
  position: relative;
  //-webkit-perspective: 1000;
  -webkit-backface-visibility: hidden;

  // Hide the top border if any
  margin-top: -1px;
}

/**
 * Scroll is the scroll view component available for complex and custom
 * scroll view functionality.
 */
.scroll {
  @include user-select(none);
  @include touch-callout(none);
  @include text-size-adjust(none);
  @include translateZ(0);
  @include transform-origin(left, top);
  //-webkit-perspective: 1000;
  -webkit-backface-visibility: hidden;
}

// Scroll bar styles
.scroll-bar {
  position: absolute;
  z-index: $z-index-scroll-bar;
}
.scroll-bar-h {
  height: 3px;
  left: 2px;
  right: 2px;
  bottom: 3px;

  .scroll-bar-indicator {
    height: 100%;
  }
}

.scroll-bar-v {
  width: 3px;
  bottom: 2px;
  top: 2px;
  right: 3px;

  .scroll-bar-indicator {
    width: 100%;
  }
}
.scroll-bar-indicator {
  position: absolute;
  background:rgba(0,0,0,0.3);
  border-radius: 4px;
  opacity: 1;


  &.scroll-bar-fade-out {
    @include transition(opacity 0.3s linear);
    opacity: 0;
  }
}


// Scroll refresher (for pull to refresh)
.scroll-refresher {
  overflow: hidden;
  margin-top: -60px;
  height: 60px;
  position: relative;

  .icon-refreshing {
    display: none;
    @include animation-duration(1.5s);
  }
}

.scroll-refresher-content {
  position: absolute;
  left: 0;
  bottom: 15px;
  width: 100%;
  text-align: center;

  font-size: 30px;
  color: $scroll-refresh-icon-color;
}

.ionic-refresher-content {
  position: absolute;
  left: 0;
  bottom: 15px;
  width: 100%;
  text-align: center;

  font-size: 30px;
  color: $scroll-refresh-icon-color;

  .icon-pulling {
    @include animation-duration(200ms);
    @include animation-timing-function(linear);
    @include animation-fill-mode(both);
  }
}

@keyframes refresh-spin {
  0% { transform: rotate(0); }
  100% { transform: rotate(-180deg); }
}

@-webkit-keyframes refresh-spin {
  0% {-webkit-transform: rotate(0); }
  100% {-webkit-transform: rotate(-180deg); }
}

.scroll-refresher.active {

  .icon-pulling {
    display: block;
  }
  .icon-refreshing {
    display: none;
  }

  &.refreshing {
    .icon-pulling {
      display: none;
    }
    .icon-refreshing {
      display: block;
    }
  }

  .ionic-refresher-content {
    .icon-pulling {
      @include animation-name(refresh-spin);
    }
  }
}

.overflow-scroll {
  overflow-x: hidden;
  overflow-y: scroll;
  -webkit-overflow-scrolling: touch;

  .scroll {
    position: static;
    height: 100%;
  }
}


.overflow-scroll {
  overflow-x: hidden;
  overflow-y: scroll;
  -webkit-overflow-scrolling: touch;

  .scroll {
    position: static;
    height: 100%;
  }
}

// Pad top/bottom of content so it doesn't hide behind .bar-title and .bar-tab.
// Note: For these to work, content must come after both bars in the markup
.has-header {
  top: $bar-height;
}

.has-subheader {
  top: $bar-height * 2;
}

.has-footer {
  bottom: $bar-height;
}

// Specify that a content area will have tabs
.has-tabs {
  bottom: 49px;
}

// A full screen section with a solid background
.pane {
  position: fixed;
  z-index: $z-index-pane;
}
.view {
  position: absolute;
  z-index: $z-index-view;
}
.pane, .view {
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #fff;
}