主选定对象的选择边框在外观上不同于其他选定对象。
The primary selected object has a selection border that is distinct in appearance from the other selected objects.
长脸适合选择边框较宽的墨镜；选择椭圆形或者圆形镜框。
Oval glasses or ones with strong horizontal lines shorten the appearance of the face and soften its angles.
为了实现这种效果，我们使用 CSS 改变广告条的背景图像、选择的菜单条目旁边的图标以及底边框的颜色。
To achieve this effect we used CSS to change the background image of the banner, the icon next to the selected menu item, and the color of the bottom border.
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