background-size css w3schools code

多个属性(比如background-image,background-repeat,background-size

code{background:url(code_bg.

css3新增了background-size允许背景图被拉伸或者压扁.

这是 background-size 不同取值的规则,具体见 w3c

css中背景颜色怎么设置?用background-color属性 - 如乐建站之家

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