filter实现背景虚化
边框模糊
<img width="1424" alt="image" src="https://github.com/wangpinyuan/blog/assets/20550379/accda0a7-3d6e-412b-9e0c-a6eba513623f">
边框清晰
<img width="1435" alt="image" src="https://github.com/wangpinyuan/blog/assets/20550379/e26a3f34-97c2-4b8e-9bd2-b1ae6deccd23">
backdrop-filter
不想模糊文字，只需要模糊部分背景
<img width="1344" alt="image" src="https://github.com/wangpinyuan/blog/assets/20550379/a5d10595-1002-4320-8764-0e4fbf3e9804">
通过bos-shadow inset 实现深色背景
<img width="1429" alt="image" src="https://github.com/wangpinyuan/blog/assets/20550379/335d1ebb-be39-4aa9-a73f-d453f3fb741c">
