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                ##3.1 CSS3邊框簡介 `border`屬性在CSS1中就已經定義了,使用它可以設置元素的邊框風格。 ###3.1.1 邊框的基本屬性 CSS1和CSS2中的邊框屬性確實很簡單,其主要包括三個類型值。 1. `border-width`:設置元素邊框的粗細。 2. `border-color`:設置元素邊框的顏色。 3. `border-style`:設置元素邊框的類型。 在實際中可以將上面三個屬性合并在一起,其縮寫語法如下: border: border-width border-style border-color; 縮寫后的每個屬性之間使用空格隔開,而且它們之間沒有先后順序,可這里三個值中唯一需要的值是“`border-style`”。 ###3.1.2 邊框的類型 | 屬性值 | 功能描述 | 示例代碼 | |---|---|---| | `none` | 定義無邊框 | `.ele{border:none;}` | |`hidden`| 與"`none`"相同,不過應用于表時除外,對于表,`hidden`用于解決邊框沖突 | `.ele{border:hidden;}` | | `dotted` | 定義點狀邊框 | `.ele{border: 3px dotted red;}` | | `dashed` | 定義虛線邊框 | `.ele{border: 3px dashed red;}` | | `solid` | 定義實線邊框 | `.ele{border: 3px solid red;}` | | `double` | 定義雙線。雙線的寬度等于`border-width`的值 | `.ele{border: 3px double red;}` | | `groove` | 定義3D凹槽邊框,其效果取決于`border-color`的值 | `.ele{border: 3px groove red;}` | | `ridge` | 定義3D壟狀邊框,其效果取決于`border-color`的值 | `.ele{border: 3px ridge red;}` | | `inset` | 定義3D`inset`邊框,其效果取決于`border-color`的值 | `.ele{border: 3px inset red;}` | | `outset` | 定義3D`outset`邊框,其效果取決于`border-color`的值 | `.ele{border: 3px outset red;}` | | `inherit` | 規定應該從父元素繼承邊框樣式。部分瀏覽器不支持這個屬性值 | `.ele{border: 3px inherit red;}` | #####chrome ![chrome](http://upload-images.jianshu.io/upload_images/1875545-9fcb21803a660eba.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240) #####360安全瀏覽器急速模式 ![360安全瀏覽器急速模式](http://upload-images.jianshu.io/upload_images/1875545-a59013b3e1d9e321.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240) #####360安全瀏覽器兼容模式 ![360安全瀏覽器兼容模式](http://upload-images.jianshu.io/upload_images/1875545-df90f050a94d27ef.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240) #####firefox ![firefox](http://upload-images.jianshu.io/upload_images/1875545-8ef5a9213438bd58.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240) #####IE11 ![IE11](http://upload-images.jianshu.io/upload_images/1875545-aaf50efbacc48672.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240) #####IE10 ![IE10](http://upload-images.jianshu.io/upload_images/1875545-2e42545882265bb3.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240) #####IE9 ![IE9](http://upload-images.jianshu.io/upload_images/1875545-7531cae1670c853c.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240) #####IE8 ![IE8](http://upload-images.jianshu.io/upload_images/1875545-cb893299bd9ced25.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240) #####IE7 ![IE7](http://upload-images.jianshu.io/upload_images/1875545-52133099ad0cdcf5.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240) **上面IE78910均未使用原生IE測試,而是使用了IE11自帶的IE78910進行的測試。 **
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