Table of Contents
设计场景
解决方案
写到这里小编提问:如何实现半椭圆呢?
写到这里小编再次提问:如何实现四分之一椭圆呢?
Home Web Front-end HTML Tutorial 元素形状之“自适应的椭圆”_html/css_WEB-ITnose

元素形状之“自适应的椭圆”_html/css_WEB-ITnose

Jun 21, 2016 am 08:45 AM

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>
Copy after login

风格

.box {  width: 200px;  height: 200px;  border-radius: 50%;}
Copy after login

说明:这个百分比值是基于 元素的尺寸进行解析

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 login
    Copy after login
    Copy after login
    Copy 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 login
    Copy after login
    Copy after login
    Copy 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 login
    Copy after login
    Copy after login
    Copy 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 login
    Copy after login
    Copy after login
    Copy 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>
Copy after login

风格

.box {  width: 256px;  height: 160px;  background-color: #fb3;  border-radius:  100% 0 0 0;}
Copy after login

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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