<wrapper>
  <view class="header-title-bg"></view>
  <view class="header-title" style="padding-top: {{ statusBarHeight }}px;">
    <view class="header-left" style="height: {{ titleBarHeight }}px;">
      <slot name="icon"><view a:if="{{ history }}" onTap="back" class="header-back">
        <am-icon type="left" size="18" color="#fff" />
      </view></slot>
      <view>{{ title }}</view>
    </view>
  </view>
</wrapper>
