These are two CSS classes, separated by a comma, with different background colors.

这些是两个css类，由一个逗号分开，有不同的背景颜色。

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The example displays different types of templates with different background colors.

该示例显示具有不同背景色的不同类型的模板。

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After all, it is easier to begin a conversation with someone with a different background sitting behind a computer screen.

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What I most enjoy about working with children is being able to make a contribution to people with a very different background than mine.

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Imagine having a group of display cubes when it comes time to plan the seating chart for a reception -- each cube could represent one individual, with a color-coded background and a name or photo up top, with different descriptive elements on each side.

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