元素形状之“自适应的椭圆”_html/css_WEB-ITnose
设计场景
- 有时候我们不给元素指定固定的宽高,是希望它能 根据内容自动调整并适应
- 如果宽高相等,就显示为一个圆;如果宽高不等,就显示为一个椭圆
解决方案
结构
<div class="box"> <!-- 自适应的椭圆内容 --></div>
风格
.box { width: 200px; height: 200px; border-radius: 50%;}
说明:这个百分比值是基于 元素的尺寸进行解析 的
写到这里小编提问:如何实现半椭圆呢?
沿横轴劈开的上半椭圆结构
<div class="box"> <!-- 半椭圆内容 --></div>
Copy after loginCopy after loginCopy after loginCopy after login风格
.box {width: 256px;height: 160px;background-color: #fb3;border-radius: 50% / 100% 100% 0 0;}
Copy after login沿横轴劈开的下半椭圆结构
<div class="box"> <!-- 半椭圆内容 --></div>
Copy after loginCopy after loginCopy after loginCopy after login风格
.box {width: 256px;height: 160px;background-color: #fb3;border-radius: 50% / 0 0 100% 100%;}
Copy after login沿纵轴劈开的左半椭圆结构
<div class="box"> <!-- 半椭圆内容 --></div>
Copy after loginCopy after loginCopy after loginCopy after login风格
.box {width: 256px;height: 160px;background-color: #fb3;border-radius: 100% 0 0 100% / 50%;}
Copy after login沿纵轴劈开的右半椭圆结构
<div class="box"> <!-- 半椭圆内容 --></div>
Copy after loginCopy after loginCopy after loginCopy after login风格
.box {width: 256px;height: 160px;background-color: #fb3;border-radius: 0 100% 100% 0 / 50%;}
Copy after login
说明:border-radius 属性可以 单独指定水平和垂直半径,只要用一个斜杠(/)分隔这两个值即可
写到这里小编再次提问:如何实现四分之一椭圆呢?
结构
<div class="box"> <!-- 半椭圆内容 --></div>
风格
.box { width: 256px; height: 160px; background-color: #fb3; border-radius: 100% 0 0 0;}
说明:创建四分之一椭圆要满足的条件,其中一个角的水平和垂直半径值都设为100%,其它三个角都设为0
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