border-radius圆形

border-radius属性用于设置边框的圆角效果。在CSS中，可以通过多种方式来设置border-radius的值来实现不同的效果。以下是几种设置border-radius实现圆形的方法:

1. 设置border-radius为50%或者100px，这样可以将一个正方形元素变成一个圆形。例如：<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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- *3* [CSS3 border-radius 属性](https://blog.csdn.net/qq_38436939/article/details/83830427)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 50%"]
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