# box-shadow &nbsp; ## 疑問區 <details> <summary>為什麼模糊半徑太大會爆版</summary> - [box-shadow-被遮擋](https://codepen.io/hfuyorvx-the-bashful/pen/WNKLLXN) * 有一個極限值？ ![](https://media.heptabase.com/v1/images/0385f9f1-ede8-4895-9bdf-6b89e74499ff/1f9ec2c8-79bf-4cc2-82da-b0d4fae6a5c6/image.png)![](https://media.heptabase.com/v1/images/0385f9f1-ede8-4895-9bdf-6b89e74499ff/621f3a0f-9416-4c77-b3e5-ae00d9a22275/image.png#center =100%x) * 因為RWD-01作業，漢堡條出現時背景色用到模糊半徑，發現有爆版現象 ![](https://media.heptabase.com/v1/images/0385f9f1-ede8-4895-9bdf-6b89e74499ff/08c74e4a-3d9a-4e17-8832-3cdec07c3732/image.png) ![](https://media.heptabase.com/v1/images/0385f9f1-ede8-4895-9bdf-6b89e74499ff/57c22042-99a5-42a4-aaee-d1666580d7c5/image.png) </details> ## 參考資料 [你所不知道的 CSS 陰影技巧與細節 · Issue #39 · chokcoco/iCSS](https://github.com/chokcoco/iCSS/issues/39)