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          CSS3渐变效果linear

          HTML5中CSS3背景渐变功能,主要有两种渐变方式:线性渐变和径向(放射性)渐变。一、线性渐变CSS3提供了linear-gradient 属性实现背景颜色的渐变功能。在以前,这种效果必须采用图片才...

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