ionic-framework/ionic/components/toolbar/toolbar.scss

// Toolbar
// --------------------------------------------------

$toolbar-background:              #f7f7f8 !default;


.toolbar {
  @include flex-display();
  @include flex-direction(row);
  @include flex-align-items(center);
  @include flex-justify-content(space-between);
  background: $toolbar-background;
}

.toolbar-top {
  @include flex-order($flex-order-toolbar-top);
}

.toolbar-bottom {
  @include flex-order($flex-order-toolbar-bottom);
}

.toolbar-items {
  @include flex-display();
  @include flex(1);
  @include flex-justify-content(space-between);
}

.toolbar-item,
.toolbar-item ion-nav-items {
  @include flex-display();
  @include flex-align-items(center);
}

.toolbar .button {
  background: transparent;
  border: none;
}

.back-button {
  @include flex-display();
  @include flex-order(1);
}

.back-button-icon {
  margin-right: 5px;
  min-width: 12px;
}

.toolbar-title {
  @include flex-display();
  @include flex(1);
  @include flex-align-items(center);
  @include flex-order(2);
}

.toolbar-inner-title {
  width: 100%;
  padding: 0 15px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.toolbar-primary-item {
  @include flex-order(3);
}

.toolbar-secondary-item {
  @include flex-order(4);
}