边框底部样式 | border-bottom-style (Backgrounds & Borders) - CSS 中文开发手册
border-bottom-style CSS属性设置元素的底部的线条样式border。
/* Keyword values */ border-bottom-style: none; border-bottom-style: hidden; border-bottom-style: dotted; border-bottom-style: dashed; border-bottom-style: solid; border-bottom-style: double; border-bottom-style: groove; border-bottom-style: ridge; border-bottom-style: inset; border-bottom-style: outset; /* Global values */ border-bottom-style: inherit; border-bottom-style: initial; border-bottom-style: unset;
注意：规范没有定义不同风格的边界如何连接角落。
| 初始值 | none |
|---|---|
| 适用元素 | all elements. It also applies to ::first-letter. |
| 是否是继承属性 | no |
| 适用媒体 | visual |
| 计算值 | as specified |
| Animation type | discrete |
| 正规顺序 | the unique non-ambiguous order defined by the formal grammar |
语法
border-bottom-style属性被指定为从border-style属性中选择的单个关键字。
正式语法
<br-style>where <br-style> = none | hidden | dotted | dashed | solid | double | groove | ridge | inset | outset
示例
这是一个表格，显示了所有border-bottom-style的值
HTML
<table> <tr> <td class="b1">none</td> <td class="b2">hidden</td> <td class="b3">dotted</td> <td class="b4">dashed</td> </tr> <tr> <td class="b5">solid</td> <td class="b6">double</td> <td class="b7">groove</td> <td class="b8">ridge</td> </tr> <tr> <td class="b9">inset</td> <td class="b10">outset</td> </tr> </table>
CSS
/* Define look of the table */
table {
border- 3px;
background-color: #52E385;
}
tr, td {
padding: 3px;
}
/* border-bottom-style example classes */
.b1 {border-bottom-style: none;}
.b2 {border-bottom-style: hidden;}
.b3 {border-bottom-style: dotted;}
.b4 {border-bottom-style: dashed;}
.b5 {border-bottom-style: solid;}
.b6 {border-bottom-style: double;}
.b7 {border-bottom-style: groove;}
.b8 {border-bottom-style: ridge;}
.b9 {border-bottom-style: inset;}
.b10 {border-bottom-style: outset;} 结果
规范
| Specification | Status | Comment |
|---|---|---|
| CSS Backgrounds and Borders Module Level 3The definition of 'border-bottom-style' in that specification. | Candidate Recommendation | No significant change. |
| CSS Level 2 (Revision 1)The definition of 'border-bottom-style' in that specification. | Recommendation | Initial definition. |
浏览器兼容性
| Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | 1.0 | (Yes) | 1.01 | 5.5 | 9.2 | 1.0 |
| Feature | Android | Edge | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | (Yes)1 | 7.0 | (Yes) | (Yes) |
在Firefox 50之前，圆角（带border-radius）的边框样式总是呈现为如同border-bottom-style被设置为 solid一样。这已在Firefox 50中修复。
另见
其他样式相关的边框属性：border-left-style，border-right-style，border-top-style，和border-style。另外底部边框相关的属性：border-bottom，border-bottom-color，和border-bottom-width。
CSS 中文开发手册